Motivations and evaluation criteria.
Most employees are evaluated negatively if they spend a bunch of corporate money or invest a bunch of time and human resources in an activity or asset that proves to be a failure.
The top level decision makers though are evaluate on their 'vision' and being able to take advantage of opportunities in the market place.
Look at it this way, how many people are still talking about how much MS wasted building Zune's nobody wanted, vs their early Internet, and mobile phone misses? Which are the subjects of business school seminars? If it really proves the case the case that AI lets you replace half your workforce and rocket ahead of your competitors, but your the CEO who decided to pass, you are done for professionally. On the other hand if you spend a few million on AI investments and nothing comes of it, a quarter or two later its all forgotten.
If I spend a few hundred-K of my bosses money on some wiz-bang new tech-toy, and it proves to be useless or harmful to the business I am either getting laid off or at least my stock and future in the organization are probably a lot lower. If I wait to pitch him on something until it is more clearly a win even if it costs more than getting in on the ground floor might of I probably do alright. If wizbang turns out to be a dud or harmful, I end up looking smart because boss see's my advice to wait and see having been wise.
-The folks your c-suite may or may not be smarter than you or I, they probably are stupid either, they are just playing a very different game with a risk and reward structure that isn't like the one we are playing.