Investor enthusiasm around artificial intelligence is facing a tougher test as scrutiny grows over whether massive spending by large technology companies will produce strong returns. The debate has shifted from excitement about AI’s potential to questions about how quickly those investments can pay off.

Chris Wood has warned for some time that the biggest cloud and platform companies, often described as hyperscalers, could end up wasting large sums in an aggressive capital spending cycle. His view suggests that pouring billions into AI infrastructure does not automatically lead to durable profits, especially if competition intensifies and pricing power weakens.

A key part of that argument is the comparison between AI and the airline industry rather than the internet era. Instead of a clear winner-takes-all outcome, AI could evolve into a capital-heavy business where companies spend enormous amounts just to keep up, leaving investors with lower-than-expected returns.

That concern matters more now because markets are becoming less willing to reward spending without visible financial benefits. If AI investment keeps rising while earnings lag, pressure on valuations could increase and the market may take a more selective view of which companies can turn AI ambition into sustainable profit.