To me, exploitation by association is still exploitation.

But by this telling, the billionaire isn’t any less moral than the person who buys the tickets. If simply transacting with this system is unethical, then the billionaires aren’t any worse than the millionaires, or even the people barely subsisting on what they have.

In my eyes, there’s a huge difference between the person who actively exploits others, and one who incidentally interacts with a person who exploits others. Especially if choosing to opt out wouldn’t actually reduce the exploitation happening. There are still degrees to things, so it’s entirely possible for the billionaire artist to be ethically superior to the millionaire venue operator, even when they both rely on the other.

Not to mention, there’s a difference in kind when talking about exploitation in terms of a team effort where not enough of the fruits of the labor get shared fairly with all team members (positive sum interactions) versus when one actively takes from another, and that victim is worse off from the transaction.