That’s pretty easy tbh, most of the core bitcoin devs all work for a single company that can absolutely be bought out, and even have gone on record on how much they dislike bitcoin.
It was the main reason I got out, I bought into it because I was excited by the tech behind it, but no single company should have that much control over the direction it goes in.
Now you could argue that if they did so the chain would just split and the rest of the world would just stay off the USA owned chain, but imo they have already done so much against the interest of bitcoin and everyone has just gone along with it so far (minus the bch split) so what do I know.