The only reason my chair manufacturer would be entitled to the proceeds of my success whilst I was in their chair is if I hadn't already paid them for the work they put into making the chair for me. Even then, why would my success with their product have anything to do with how much they can charge me for their labour? What other things work like that outside of the modern tech world?

Seriously, look around you, pick a thing, imagine a world where the price you paid for that thing hinged on your personal individual success with that thing.

edit: to clarify, my point is why can't we pay for the model weights up front for offline models? Why would we continue paying for things we don't want/need anymore, like updates for offline software that does it's job fine?

If they charged for the weights up front, then your critique would simply reverse.