I can see the functional difference there, with regards to sell/trade/loan. You could of course emulate the functionality, or rely on the honor system for abandon ware stuff, but that's clunky, inefficient, not worth the energy.

I hadn't considered the second hand aspect. Even as a kid, I was always more a "build a library" kind of person versus a "cycle my catalog" kind of person. I was considering things from an availability to play the game perspective alone. Thanks for the different perspective!