I agree with all those points.

I don't know if adding exceptional cases to de equation adds to the argument or not. But there are many instances where the ones selling the product are not the ones that made it, and the ones that made it will never see a penny of what you paid for. This is true in old games/media, where rights were bought long ago by corporations and creators see nothing. Also true in any big production made by a big corporation with many workers. The workers who actually create the IP were paid by hour, while corporations and investors get to keep milking the product after creators had been paid.

This will invalidate any argument about creators getting compensated for their work. For those cases at least.