Your not being oppressed. Get over it.
Because free speech is a societal and cultural value, as much as a legal one. A commune of religious weirdos with no laws at all could be highly tolerant or intolerant of dissent. It could embrace or reject free speech, just socially based on whether they ostracize the dissenters. Similarly, a nation of publishers where every publisher refuses to publish anything controversial, dissident or offensive may have no First Amendment issues, but it's not one that takes the principles and values of free speech very seriously.
It seems like you are confusing real life with some fantasy world you live in. Welcome to late stage capitalism. It's not fair.
It is sad I have to repeat myself so you can understand that private companies can do as they please.