>>echoan+dv
I think one method here is to incorporate your own site into the content as much as possible. For example, if you are a creator, get people to sign up to a newsletter to get the source files. Get people onto your platform/forum/whatever as well as watching through YouTube. Easier said than done, but better than not doing anything.
From there, you also ensure that you have a backup of all your videos. I've talked to people that only had their stuff on YouTube/Facebook/whatever. It is super risky. If you have a backup, and YouTube bans you, you can rehost elsewhere, it won't be as big, but you might still have a business afterwards.