Me and my twin brother have had it as a passive income thingie for years. After a failed attempt at selling it (SaaS metrics are NOT easy) we met a guy who saw some potential and we're finalizing paperwork with our lawyer to create a Swedish limited company right now with him as co-founder. We will try to take the plunge and get it running as a full time company within a couple of years!
Achieving a lifestyle passive income project is surprisingly hard...