[nik736]

The problem with ONCE is that software is never finished. This is why most ONCE software that is still available today is charging a one off licensing fee + update fee (e.g. charge yearly for major updates or 10% of the one off fee per year). This is sustainable, but your model isn't. You will notice down the road in 2-4 years that it's no fun to work for free for users that expect an update because it requires patching or there are breaking changes.

[kyrylo]

That’s a fair concern, but I see it differently. Software can reach a point of maturity - not “dead” just done. That’s the whole philosophy behind ONCE: build something great, maintain it responsibly, and stop when it’s complete.