Consumers want to not care about the details. Most people don't care much about federation, p2p, full decentralization or centralization, until something crashes. As long as they have no problems, they would even play with the devil.
Centralized solutions, tend to be easier in usage, faster, and with a more stable moderation who maintains the peace. This is something decentralized solutions can't easily replicate, but it's not like it's impossible. It's just that so far not many are trying to climb this mountain, because implementation and maintaining of centralized systems is also easier.
