[ Trying to put some classiccmp spin on the discussion... ]
Imagine General Motors, Ford, Toyota or any other car
maker
wanting a cut of the money if you sell your old car to some-
body else instead of just dropping it into the next landfill.
This reminds me of my biggest complaint about several commercial
Unix offerings in the early 90's - user licensing. "Excuse me, I
can only have X users on my Vax/Alpha?" Alright, maybe some other
non-Unix OSes as well ;^)
The analogy was always to Ford/GM saying, "Yes, you bought our
biggest van with the third row seat, but you may only use the
the front two bucket seats until you pay us Y dollars per year."
Definitely led me to move to systems that didn't have such
silly encumbrances.
--Steve.