I don’t understand this. He’s got a massive audience. How hard is it to build a Twitter clone where he can blast his messages to all his followers?
Social networks are natural monopolies. You go where your friends already are. Once there, you tend to stay there, rather than going through the whole process again on some other site.
In this case he appears to have half-assed it. It's not impossible that his following was devoted enough to jump through those hoops. He'd have needed a catchy app and a constant stream of content to make it engaging. Maybe a whole Twitter clone ecosystem might have done it, but that comes with a ton of headaches. (Even the free-est speech platform doesn't like being overrun with spammers, for example.)
Instead, he seems to have counted on his notoriety to do all of the work, and that was surely not going to cut it.
Perhaps his followers are less enthousiast than they appear on tv but surely installing an app has to be less of an effort than putting down a sign or joining a protest march, right?
Twitter allowed him to reach reporters who read, spread, and amplified whatever he tweeted.
I suppose Mike Lindell can help with that. He has recent relevant experience.