OP, At the risk of sounding like self promotion, I have 2 products that I am working on and really want to be as "just" as possible. ( One of them being https://mergeclouds.com/ , it is still work in progress ) .
1) Non-recurring , fixed price .
2) The software will not stop working even after privacy / terms update ( you are not forced to agree to use keep them ). They will just work based on last configuration of privacy policy when you bought them .
Basically treating software like a physical product, you pay for them once and regardless of how manufacturing changes does not change how product you already own functions. At-least from my side as a developer I completely agree and am trying to stay true.
1) Non-recurring , fixed price .
2) The software will not stop working even after privacy / terms update ( you are not forced to agree to use keep them ). They will just work based on last configuration of privacy policy when you bought them .
Basically treating software like a physical product, you pay for them once and regardless of how manufacturing changes does not change how product you already own functions. At-least from my side as a developer I completely agree and am trying to stay true.