For desktop software, and mobile apps without a backend, I agree. For everything with a backend though, I just don't see how it's a sustainable business model

For desktop software, and mobile apps without a backend, I agree. For everything with a backend though, I just don't see how it's a sustainable business model to allow customers to keep using the backend in perpetuity. Of course, a lot of consumers know knowing about the tech that's involved, so as a software engineer I have a different perspective here.