Good advice is in short supply because most of the market reoriented in favor of SaaS and subscription pricing (buoyed by lofty market valuations and predictable revenue streams)

Perpetual licensing + paid support and maintenance contract balances the core goal.

That said, sometimes software is just "done". The classic unix utilities like `cat` don't need monthly releases. If you can reach that stage, there should be no need to ship new developments regularly and focus should shift to ensuring it keeps running ("maintenance mode")