Obviously we all want to avoid enshittified (aggressively monetized) software or at least get our money’s worth. I’m looking at self-hosting software right now and one I’m looking has a pricing page but only for cloud (no other paywalled features) and is open source. I tried looking up future plans and didn’t find much, so it doesn’t seem like it will enshittify. (not related) I had thought about switching to Omnivore for a long time but then they merged with ElevenLabs and the rest is history.
Unfortunately, the availability of “one time purchase” is not a guarantee anymore as more and more devs have killed existing versions sold with perpetual licences.