AFAIK nothing. From what I've seen nearly everybody is remaining on youtube and is counting on using alternative monetization platforms such as patreon or sell

AFAIK nothing. From what I've seen nearly everybody is remaining on youtube and is counting on using alternative monetization platforms such as patreon or selling merchandise. This gives them a security net if youtube decides to demonetize their videos (or simply if their youtube revenue drops off), but doesn't help them if youtube just starts deleting their videos or bans them from the platform. For instance Cody's Lab has a patreon page which doubtlessly helps with falling revenue from youtube, but it doesn't prevent youtube from giving him various community guideline strikes and locking his channel for videos that were considered acceptable years ago when they were uploaded but are now retroactively in violation. (Some specific 'genres' of content creators have alternative platforms. For instance gamers have twitch, and gun channels have full30. But I've not seen any alternative platform becoming popular that targets the full range of youtube content) (Incidentally the ubiquity of patreon makes me wonder if it too will shape up to be considered a harmful monopoly one day in the not so distant future.)