Sure, but it's highly liquid stock in a publicly listed company. If someone asked me if I want 99M in cash or 100M in Meta stock, I would rather take 100M in Meta stock. That's how liquid it is. You seem to treat Meta stock as if it was some cryptocurrency with daily volume measured in thousands.
On the receiving side sure, if the contract is written such that you are actually allowed to sell the shares easily, which often you are not.
My main point is that $250M sounds like a huge number, and that it shows how extreme the value of AI is seen. But that's exactly the point. They want to be perceived as thinking AI is worth extreme amounts of capital, suggesting it will ROI even more. Otherwise they wouldn't be spending $250M on one guy right? But here comes the catch, they don't think that one person is worth $250M, they can print money for free and claim this guy is worth this much without having to pay for it. Effectively diluting existing shareholder value. This whole thing works because Meta is seen by investors as a growth stock, they have 10-100x larger earnings to share values than mature stocks like Ford. They are printing money to be able to print more money in the future. Follow up reading [1]