折りたたみスマホiPhoneDuo 高値転売で60万円！？
A former securities trader turned financial planner breaks down three news stories: China's push to build concentrated solar power capacity equivalent to 15 nuclear reactors by 2030, despite the same problems that drove the U.S. and Spain to abandon the technology; Apple's first foldable iPhone, the "Duo," selling for over ¥600,000 on Mercari just days after its ¥364,800 launch price; and warning signs in AI finance, as free cash flow at Meta turned sharply negative and CDS premium rates for AI-linked companies hit record highs.
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What this episode answers
How does concentrated solar power (CSP) work, and how is it fundamentally different from solar panels?
More than 10,000 mirrors track the sun and focus light onto a tank at the top of a central tower, heating a special molten salt — which only melts above 200°C — to as high as 500°C; that heat turns water to steam to drive a turbine. Unlike solar panels, CSP stores heat rather than electricity, enabling generation to continue for up to 11 hours after sunset.
Why is China pushing ahead with CSP while the U.S. and Spain have largely withdrawn?
China plans to scale CSP to the equivalent of 15 nuclear reactors by 2030, with the largest facility currently under construction covering 518 soccer pitches, but the U.S. and Spain have effectively shut down their CSP sectors because solar panels and batteries fell in cost so fast that CSP became relatively expensive, mirror glare kills birds and poses hazards to aircraft as far as 10 km away, and molten salt leaks and solidification below 200°C require constant heating. Construction sites named include Tibet (Lhasa) and Xinjiang, regions where the BBC has reported drone footage suggesting forced relocations, raising human-rights concerns.
Why is Apple's first foldable iPhone, the "Duo," selling for over ¥600,000 on resale markets immediately after launch?
Orders flooded in worldwide the moment pre-orders opened on October 16, quickly depleting domestic inventory, so a scarcity premium has been added to the ¥364,800 retail price, with screenshots showing completed Mercari transactions at around ¥600,000. Apple products tend to hold high trade-in values, which also attracts buyers aiming to profit on resale.
How have the free cash flows of major tech companies changed as AI capital expenditure has surged?
Meta's free cash flow for Q3 2026 (July–September) swung to negative $2.1 billion (approx. ¥300 billion) from positive $10.6 billion (approx. ¥1.6 trillion) a year earlier due to AI data-center investment; Google also turned negative as capex exceeded operating cash flow; and NVIDIA's operating cash flow roughly halved quarter-on-quarter despite receiving heavy capex spending from its customers.
What do rising CDS premium rates signal about AI-related companies?
A higher CDS premium rate means the market is pricing a greater risk of default on that company's bonds; Meta's 5-year CDS rate has exceeded 1.1% (an all-time high), Oracle's has topped 3% (roughly double the June level), SoftBank Group's exceeds 4.2%, and AI cloud firm CoreWeave's has surpassed 10% — meaning annual premiums of $1 million per $10 million of bonds — a level widely regarded as a genuine danger zone.
How Concentrated Solar Power Works — A Fundamental Difference from Solar Panels
Concentrated solar power (CSP) uses more than 10,000 mirrors that continuously adjust their angle to follow the sun, focusing all that reflected light onto a tank mounted at the top of a single central tower. Inside the tank sits a special molten salt that remains solid below 200°C; the focused sunlight heats it to as high as 500°C. That heat is then used to boil water, generate steam, and spin a turbine to produce electricity.
The critical advantage over conventional solar panels is thermal storage. Because the salt holds heat for a long time, generation can continue for up to 11 hours after sunset — the longest such window in the industry.
China Presses Forward Where the West Has Pulled Back
China has announced plans to expand CSP capacity to the equivalent of 15 nuclear reactors by 2030. The largest facility now under construction covers the same area as 518 soccer pitches — the biggest in the world — and plans are also on the table for a site at latitude 45°N, roughly equivalent to Japan's Cape Soya, in a cold-climate region.
By contrast, the United States and Spain have largely withdrawn from or suspended their CSP programs. Three main reasons explain the retreat. First, solar panels and batteries have dropped in price so rapidly that CSP has become comparatively expensive. Second, the intense glare from the mirrors burns birds in mid-flight and creates hazards for aircraft visible as far as 10 km from a 260-meter tower. Third, operational risks are significant: molten salt can leak, and because it solidifies below 200°C the entire system must be kept continuously heated.
The construction sites China has named include Tibet (Lhasa) and Xinjiang — regions where the BBC has released drone footage raising suspicions of forced relocations. The BBC report highlights serious human-rights concerns about large-scale development in those areas.
Apple's First Foldable iPhone, the "Duo," and the Resale Market
On October 23, Apple launched the iPhone Duo, the first foldable in the iPhone lineup. The direct-sale price starts at ¥364,800. The device measures 5.4 inches when folded and 7.6 inches when open — nearly the same screen area as an iPad mini (8.3 inches).
Pre-orders opened on October 16 and demand immediately overwhelmed supply worldwide, leaving domestic stock essentially depleted. Within a week before launch, large numbers of units appeared on Mercari, with screenshots confirming completed transactions at around ¥600,000. The U.S. price is $1,999 (approximately ¥312,555); adding consumption tax narrows the gap somewhat, but given that average U.S. annual income is roughly double Japan's, Japanese buyers face a notably steep premium in real terms.
Looking at the cost in working days: a male full-time employee (average annual income ¥6.23 million, take-home daily equivalent approximately ¥19,000) would need to work 19 days to afford the Duo at retail price; a non-regular worker (average annual income ¥2.1 million, take-home daily equivalent approximately ¥6,800) would need 54 days — more than two months. Also worth noting: Japan raised the corporate expense write-off ceiling to ¥400,000 this year, making the ¥364,800 Duo eligible for immediate full expensing by businesses.
Competing Samsung Galaxy Z-series foldables are priced between roughly ¥110,000 and ¥250,000. A persistent structural challenge for all foldables is the durability of the hinge mechanism.
Cracks in the AI Bubble — Cash Flow Deterioration and Record CDS Rates
On October 23, the Nikkei Average fell 214 points to 62,693 (briefly dropping more than 1,400 points intraday) and the Nasdaq declined 2.6%. The catalyst was market concern over Meta's massive AI investment plans.
Meta's free cash flow — operating cash minus capital expenditure — for Q3 2026 (July–September) came in at negative $2.1 billion (approx. ¥300 billion). One year earlier it had been positive $10.6 billion (approx. ¥1.6 trillion): a dramatic reversal. Google has also turned negative as capex now exceeds operating cash flow. Only Microsoft and Apple remain in positive territory, though Microsoft's surplus is shrinking.
NVIDIA should be receiving a flood of capex dollars from all these companies, yet its operating cash flow fell by roughly half quarter-on-quarter. Beyond slower payment collection, analysts have pointed to a circular-trading dynamic in which investment funds flowing into firms like OpenAI are then used to purchase NVIDIA products.
The metric markets are watching most closely is the CDS (credit default swap) premium rate — the cost of insuring against a bond issuer's default. The higher the rate, the greater the market-implied bankruptcy risk. Meta's 5-year CDS rate has exceeded 1.1%, an all-time high. Oracle's is above 3%, roughly double its June level. SoftBank Group's exceeds 4.2%. AI cloud firm CoreWeave has crossed 10% — meaning $1 million in annual premiums per $10 million of bonds. CDS contracts are bilateral over-the-counter instruments that require ISDA (International Swaps and Derivatives Association) registration and cannot be traded directly by retail investors. Equity markets remain broadly optimistic, but beneath the surface, risk indicators are quietly deteriorating.
Takeaways
- China's CSP plants can generate power for up to 11 hours after dark, but the technology carries the same cost, environmental, and human-rights problems that caused the U.S. and Spain to abandon it.
- Apple's iPhone Duo retails at ¥364,800 yet is trading above ¥600,000 on Mercari — a price that would take the average non-regular worker more than 54 days' pay to afford.
- Meta's free cash flow swung from positive ¥1.6 trillion to negative ¥300 billion in a single year, and CoreWeave's CDS premium rate has topped 10%, signaling growing market anxiety over the sustainability of AI investment.
This article is edited from a machine transcript of the first 30 minutes of the episode. It is not an official summary — please listen to the episode itself.