Sure, and if you want to do software as a service, I have no quarrel with it. But if, when someone pays you, you then give them possession of a good, you shouldn't be able to maintain control over the good.

If copying physical objects were as easy as copying software, the practice of renting a car wouldn't make a sustainable business, in exactly the same way. That doesn't mean we should restrict the production of automobiles by law; it just means another business model is required.