US technocapitalism is built on the premise of technological innovation driving exponential growth. This is why they are fixated on whatever provides an outlook for that. The risk that it might not work out is downplayed, because (a) they don’t want to hazard not being at the forefront in the event that it does work out, and (b) if it doesn’t work out, nobody will really hold them accountable for it, not the least because everybody does it.
After the mobile and cloud revolution having run out of steam, AI is what promises most growth by far, even if it is a dubious promise.
It’s a gamble, a bet on “the next big thing”. Because they would never be satisfied with there not being another “big thing”, or not being prominently part of it.
Riding hype waves forever is the most polar opposite thing to “sustainable” that I can imagine