Fu Peng: AI productivity narrative enters a window of waiting for falsificationIn a year-end review, macro commentator Fu Peng said the core theme of the past cycle — productivity gains from AI — has entered a mid-game phase, with 2026 H1, especially Q2, showing that big tech's free cash flow has gone to zero after years of heavy capex, forcing a shift from internal funding to external financing.
He noted that with rates high and valuations stretched, external funding means equity or debt, and investors will ask whether the money can be earned back. The market turned fragile, and from June to July 2026 a full transmission chain played out — from macro and liquidity tightening to the industrial layer and finally high-leverage liquidation at the market level.
Fu said AI coding tools remain at the efficiency layer, not the application layer, and true enterprise-scale vertical applications are still missing. He cited data showing China's token usage is the world's largest, but coding accounts for only 15%. He described the current phase as a window period — once results appear, capital will return, similar to how ChatGPT in 2023 ended the prior drawdown.
He also warned against inertial thinking at major cycle turning points, citing his earlier call that US 10-year yields would stay around 4.2% over 3-5 years. The biggest cycles, he said, are productivity, production relations and institutional order, plus demographics.
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