alt Hacker News> an open-source company has to find product market fit twice: first for the OSS project and again for a commercial product.
The only way this could be a 'lesson learned' is if you homehow managed to not pay any attention to what has been going on in the last 25 years with open source software companies.
Not really - survivorship bias means that the open source companies you are referring to have all already passed the first hurdle.