The claim is: AI is not a profitable space to compete in.
Why? 1) Most of the gains are distributed at zero-cost: academic innovation in a model is available to everyone. 2) Zero-cost gains are extremely hard to extract: Business-useful data requires large corps to do massive enterprise change projects to provide it. 3) Profit will lie in between these and incumbents are already the best placed: adding AI to business data systems and apps is best done by the providers which already own/operate those systems.
The intuition here seems sound: AI is not the kind of technology which creates competitive advantages. It apparently does so very early in a business' use of it, but it actually lowers the barrier to competition dramatically. Whatever AI company seems "ahead" now, for the above reasons, it is quite trivial to create a competitor.