There's gotta be better middle ground. Release something polished and only fix major bugs/vulnerabilities for free (because that's a liability). Minor bugs are accepted for a one off cost (I'm still using Microsoft 2016, e.g.).

We've all got to push back against these bloated saas models that don't bring tangible benefits to end users and serve only to pad company valuations. Make new versions of your software with features meaningful enough to encourage people to upgrade and outline support periods for existing software sales after they buy a one-time license. There's gotta be a better way. For everyone (except big tech CEOs).