Comment by wavemode

All you're really highlighting is the difference (from an economic perspective) between needs and wants. The world needs petroleum. But once that need is met, extra petroleum production is pointless.

Whereas the world (or, perhaps, a specific class of investors within a specific segment of the world) WANTS generative AI. The amount someone wants something (and, by extension, is willing to pay for it) is potentially unbounded, and can even be uncorrelated with real utility. (See: gemstones, trading cards, cryptocurrency...)