

I’ve heard good things about Polysecure. I understand your question doesn’t pertain to non-monogamy, but non-monogamy is an extension of being able to set and respect boundaries yourself rather than simply adopting boundaries that are the default in your community, so maybe it would be helpful?
If you don’t make profit then either you’re losing money or straddling the line between profit and losing money, neither of which is sustainable. Then someone else will come in and try.