This is one of the reasons there should simply be a big tax on AI profits, assuming they come to pass: they literally require uncompensated training on the sum of human intellectual effort. There is no AI without standing on the shoulders of both giants and thousands of everyday authors. If you're just giving the result back to humanity, OK, there's a case for it being a fair trade, though there's still the question…
Tax doesn't reward the authors. Especially foreign authors.
But even if it wasn't -- even if couldn't be -- you could use it to fund all kinds of public goods which would benefit living authors. Maybe even a basic income if it turns out to be successful enough.
It's a different pro-social bargain than direct compensation for the fruits of labor, but at least it's still a bidirectional one.