I can't speak for the world in general. But from the French perspective (surely at least 90% of French consume 90% of French content), politics and journalists

I can't speak for the world in general. But from the French perspective (surely at least 90% of French consume 90% of French content), politics and journalists hold the platform. Institutions are already starting to leave. E.g, you can be sure that if Macron starts tweeting from mastodon (the gov has an official instance https://social.numerique.gouv.fr https://social.numerique.gouv.fr), thousands of journalists and politics will switch.