[nerdbert]

In the current system, the percentage of artists who become wealthier than average from their creations is vanishingly close to zero.

Almost all the money is skimmed by the huge range of industries that have arisen to capture the marginal proceeds created by copyright law.

Maybe you could argue that all artists are motivated by the folly of dreaming that they will be the next unicorn who actually gets rich, but I don't think most of them are that naïve. They find creating fulfilling. They would still do so with a UBI.