Whats your definition of "properly compensate" when dealing with hundreds of millions of artists/authors and billions/trillions of individual training items?

Just a quick example, what's my proper compensation for this specific post? Can I set a FIVE CENTS price for every AI that learned from my post? How can I OPT-IN today?

I'm coming from the position that current law doesn't require compensation, nor opt-in. I'm not happy with it, but I dont see any easy alternative