That is a complex question but my line of thought is this: artists have accepted legal agreements on how to sell/stream their work and how much they get for it. You as a consumer don’t need to worry about this. If there is a way to buy/stream the product legally then the artist has approved of getting money that way.

Basically i don’t think this should be a point to discourage buying audio and owning it. The alternative is never owning music and tough luck if a song gets pulled because of legal disputes or whatever.