AWS CFO Says AI Infrastructure Spending Boom Is Sustainable

The pushback matters because it comes from an operator whose capex is the exposure being questioned, not an outside commentator. That framing leans on innovation value rather than near-term returns, leaving the debt, valuation and circular-financing concerns raised by skeptics unaddressed. The open question is whether revenue growth keeps pace with the buildout, since that gap — not the sustainability claim itself — is what would separate a durable cycle from a bubble.