Where does this expectation come from?

I did not commission these works.

They created their art without a contract between them and I.

Their ability to recover their cost is not my responsibility.

Their right to obtain a profit is capitalist nonsense.

The force of government injecting a contract doesn’t create a moral obligation.

So where does this moral obligation come from?

Is there some religious text indicating the divinity of copyright?

The concept was created from nothing.