"Disney is a machine that monetizes fandom, and Twitter is pretty good about fan communities (modulo the conversation about abuse)."

I'd submit one of the ways in which Twitter is "pretty good" about fan communities, by being relatively permissive about IP they don't particularly care about, is precisely a way in which Disney is constitutionally incapable of being. Disney has long been notorious for being very, very heavy on the control side of its IP. Buying something because of a fan community that you plan to essentially immediately squash is a rather silly acquisition.

"Relatively permissive" here doesn't even have to mean IP abuse (which Disney certainly would squash), but even things like expressing unfiltered negative opinions. I just don't think Disney has the cultural DNA to deal with that in a way that even remotely resembles Twitter.