AI feels like a real mania, a genuine collective break from reality among the ruling class. They might as well be pouring billions of dollars into an attempt to replace all jobs and knowledge with a large bronze idol of Dagon.
Also, never underestimate that often late middle age or older executive types are easily sold on the hype so they can tell themselves they're "with it". It's a tool of worker oppression with no shortage of "mid life crisis mentality" involved, appealing to them on multiple levels lol
Age isn't as big a factor as you're making it. A ton of young executives and VCs are only where they are because they chased a hyped product or technology and profited, even if only very briefly.
It's gambling. Plus the belief that if enough of them push the product, it will magically be a success.