Centralization is driven by competition. Services need to be able to iterate quickly to deliver features that other services have, introduce new ones that give

Centralization is driven by competition. Services need to be able to iterate quickly to deliver features that other services have, introduce new ones that give them a competitive advantage, and improve UX, all at the same time. Federation and standardization do not help in achieving any of that. There is nothing wrong with XMPP, it's not a technical issue.