I suspect that dot world is one tool in a larger plan to manage the decline of centralised social media to ensure that the capitalists still control online discourse. I can't otherwise think of an explanation for how Reddit allowed so many users to flock to a couple of instances. Previously, mentioning Lemmy on Reddit would be hidden from users if not outright deleted. Reddit did not tolerate the competition. Now they plan to defederate from one (soon to be two, no doubt) instances that started on Reddit but were kicked out for left-ist views. And after that they plan to federate with the corporate instances.