There is no altruism. Blue Sky is a good example. It appears to be decentralized in the sense that it is federated with the goal that the company runs their own Blue Sky instance for its users. So it may be decentralized but if you are banned off the biggest instance and have to move to a different one that is effectively no different than moving from one platform to the next, which does not solve the problem any of this set out to solve in the first place.

Truth is you cannot have both a moderated platform and a decentralized one. But Blue Sky needs it to be moderated if they want to exist as a company running their own instance. The only reason they will run their own instance is because they see a path to profitability and monopolistic growth.