Comment by wongarsu

There's no technical or legal reason that the word "purchase" doesn't imply an irrevocable, transferable license (for one person at a time), as well as the requirement that the "seller" makes the licensed good indefinitely available to license holders (for a fee appropriate to cost of doing so).

If they don't like that, don't call it a purchase. Anything less is just eroding the meaning of the word.