"The solution is probably to be more selective what you're open sourcing if you're planning to build a business."

Fully agree, FOSS maintainers are - in the grand economic scheme of things - beggars high on altruism. The whole model of FOSS from the position of a non-corporate sponsored developer was already broken and with the advent of AI is now most probably broken beyond-repair. Buy-me-a-coffee with a <0.01% hit rate compared to open feature requests/gh issues on some of the more popular projects out there, all while companies like atlassian - using FOSS to run their business on for free - can charge 50k EUR for a single 1h migration call. Time is the most valuable resource one can waste, something you get to realize once all the mental gymnastics wear off(either by itself or due to less fortunate life situations)