This is happening in the US, but only in the case of US domestic politics. The relevant tech companies actually provide an incredibly free and politically uncensored service in most of the world simply because they don't give a damn about politics in country X and the politicians in those countries don't have the leverage over them to make them care like US politicians do. Censoring costs money, and these companies would rather not do it. Citizens of many other countries, like Brazil, are the beneficiaries of this situation.