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AI boom may be built on fake revenue, warning signs flash for big tech \'AI bubble\'

An analysis says big tech companies\' AI investment and cloud revenue structures are reinforcing concerns about an AI bubble, as money invested in AI startups cycles back as cloud spending. Critics cite a “round-trip” funding model that boosts reported growth without new external cash. Examples include Microsoft and OpenAI, and Amazon and Anthropic. The report also points to profit impacts from stake revaluations and weak cash flow amid heavy data centre spending.