Non-profit doesn't mean “doesn’t earn profits” or “doesn’t prioritize profit”, but “doesn’t return profits to investors”.
I can't find the original HBO Real Sports link, but they go into depth about the Non-profit status and the way the funding is spent. It is a real eye opener and made me rethink how the argument that profit/revenue should be considered when dealing with the larger organizations.
Below are references, but not only highlights.
Why not? The economic value of work to the entity for which it is performed is a significant factor in the criteria under which the law now requires other formerly unpaid, often student, workers such as many interns to be paid, even when their employer is a nonprofit. Why should athletes be treated worse?