Even better is the licensing model where you can keep using the version as-is after the subscription ends. You just don't get any new features. It's even possible to do on iOS, as Working Copy [0] is doing it. (You also get all the bug fixes and stuff, only new features are behind a flag that requires you to purchase another year of updates. I would also argue that Working Copy specifically is too cheap, but I guess it's working for them.)

[0]: https://workingcopyapp.com