You said it! How long before a lot of small countries start leaving treaties like the Berne Convention? Why would they bother protecting other big countries copyrights when they're no longer getting support through programs like USAID and there's no longer any guarantee that the US will protect them in any way.
The first country to pull out has the chance to make like $100 billion by creating the next TikTok competitor that never takes down content for violating anyone's copyright. It'll be like Edison moving to Hollywood all over again! Let the gold rush begin!