Or perhaps, just perhaps, the shareholders look at how the rules are being applied, and are content that it's being done in a way that best protects their commercial interests?
Perhaps they don't really care about being taken seriously by the likes of you? Perhaps you feel that's very rude and unfair of them. Cry me a river. It's a private entity. They don't need to give two shits about your views (or mine), so long as they stay within the law.
Perhaps you're right and their application of the laws will put off users and cause them to go bust. Or perhaps you're wrong, and it will turn out to be a brilliant commercial move. Who knows? But you know, if you're jolly cross about how they run themselves, you can always set up your own platform, and attract people to it by its fearless championing of free speech. Oh wait, no need: there's Breitbart.