Honestly with this model of social networking now past its infancy and the most painful growing pains (I think), every entity of any meaningful size should be creating their own Mastodon (and Lemmy) instance. Governments, corporations, non profits, etc.

Validation, message control, etc are crucial to success, and leaving that in the hands of some for profit entity that doesn't have your interests at heart is a recipe for disaster. So many companies had to decide if they wanted to keep their access to customers on the Bird Site while dealing with people saying the N word and cheering literal Nazis. That wouldn't be a problem in federated space: just defederate.