To be fair, the more competition out there the better I say! And it doesn't have to be a full on competition, creators can create content or host the same content on multiple platforms for the most exposure. Everyone wins. If one of these technologies happens to come out on top, then they are simply doing the best job.
Also if certain platforms are censoring people, there will be others that will gladly mop up that bit of the marketplace and let the audience decide for themselves. Having multiple platforms instead of a monopoly will keep them honest, catering to the market and not the regulators.