To add to that, hostile takeovers are often portrayed in movies and TV and such as a big company forcing the owner/founder of a company out and taking it over. Like Thursday said though, no one's forcing the shareholders to sell their shares, so as long as that owner/founder owns a controlling share no one can make them sell it (I mean you could through threats and blackmail and stuff, but that actually is illegal). No one, no matter how rich, can do a hostile takeover of Valve because, also like Thursday said, Gabe owns it and he doesn't have to sell it unless he wants to.