Never said devs shouldn’t care about money. If you aren’t having fun maintaining some code, stop. If it is commercially interesting, you will probably be contacted. Charge for bug bounties. Prioritize features based on compensation. Start a foundation. There are lots of business models for OSS, the author of this article talks about how this problem is already solved - just not for him.

OSS is not a business model. OSS is provably sustainable. Dude just wants it handed to him.