Hi @krnel, I had replied you to this thread 2 days ago but for some reason it didn't get through (don't think it was censored but rather just a bug from Steemit), as that day the system was working really choppy); so, I actually forgot the reply I had written.
But when you say "private companies" own the platform (and I assume you mean they have the right to control the contents), I think this is not a valid argument. In the following video Stephan Molyneux acutely points out that these platforms don't censor contensts from what is legally defined as terrorists groups such as Antifa and other radical Muslim groups; why not? It is clear that it is a coordinated effort to go with the narratives they want. Here's the video and well worth the watch, as Molyneux is very articulate and explains what I want to convey much better than I ever can: