In a way, after 3-4 years, there isn't much difference whether you have to update your self-hosted service, or the SaaS you're using is finally removing the fun

In a way, after 3-4 years, there isn't much difference whether you have to update your self-hosted service, or the SaaS you're using is finally removing the functionality you rely on after having deprecated it 2 years earlier. The only difference is server resource management, which is not much effort if automated correctly, and security fixes which is not that much more.