The sites would have to pay youtube for the content (ideally they'd pay something similar to how much youtube pays the creator - which would actually incentiviz

The sites would have to pay youtube for the content (ideally they'd pay something similar to how much youtube pays the creator - which would actually incentivize youtube to pay creators). If youtube doesn't pay you, that's between you and youtube. Maybe there should be a mechanism for creators to optout of the mutual licencing agreements but I'd make it opt-in by default. I'd bet that the vast majority of people uploading things to youtube do so just to share their content, google shouldn't be enriched by walling off content that creators want to share with the most people. I make a few youtube videos of my hobbies (e.g how to change the fork seals on old Honda motorcycles or pull door panels off Toyotas), I don't care if I make a dime but I'd be over the moon with joy if I got a message telling me that I inspired someone to get a bike running. Google's monopolist bologna shouldn't thwart people from getting their content out there.