I have seen it done in the past, in a limited way.
You would buy a product, and it would give you access to the thing you purchased at that version number plus a number of versions afterwards. Pass that point, you needed to buy it again. I think it is a good compromise between "I own the thing I paid" and "I have to give lifetime support for people who purchase an item once many years ago"
You would buy a product, and it would give you access to the thing you purchased at that version number plus a number of versions afterwards. Pass that point, you needed to buy it again. I think it is a good compromise between "I own the thing I paid" and "I have to give lifetime support for people who purchase an item once many years ago"