>but we'll get close enough that a stable "red social media" ecosystem will emerge that's out of reach of cancellation

No it won't, because that platform already exists: Twitter. I follow lots of conservatives on Twitter who have no need to ditch the platform, because they actually are decent humans who don't promote racism, unhinged conspiracy theories, violence and sedition. All of those things are now confirmed as losing strategies for the party; businesses doubling down on a losing strategy will fail. This idea, that a certain person's particular brand of bad faith trolling represents all of republicanism, is senseless and divisive and it needs to stop. Retreating into a bubble with this attitude is going to be even more destructive for the republican party and make it even more vulnerable to getting hoodwinked by these bullshit salesmen. (Disclaimer: I don't personally belong to any political parties)