1. Zero

2. N/A, but enough content creators on YT are very much aware of the kind of prison it is, especially in the years after the Adpocalypse.

3. Obviously, nobody should be able to monetize the copying of content. If it is released, it is publicly released. But they can use LibrePay/Patreon/Buy me a coffee, they can sell merch or signed copies of things, they can do live appearances, etc.

3. they already do, since YT just doesn't really pay and regularly flips out in weird ways