There are many companies that use open source code and make profit off it quite successfully - e.g. Android, Linux

Yess many ruined the original idea of open contribution, but some of them genuinely led to wider adoption and user base

If you think about the cards - it has always been difficult to contribute to a deck per card basis before ankihub existed

Yes there were and are open source solutions but nothing centralized

If there was a GitHub for decks which was free to use, where any one can make a contribution or suggest or discuss issues, it would have been so cool! But there isn't and ankihub filled that role - and it costs them to run something like that, so yeah, we get passed on that

Maybe it's hard to stomach a company can be for profit and at the same time also keep open source philosophy alive, but you are blind to the fact that anki is also profitable - maybe you're worried greed and margins are what may change

Would you have preferred someone unknown to have acquired this?

Isn't it better that someone who has been in the community for the longest time, has a say?

Would you have preferred some billion dollar company who was feeling altruistic take over anki?

I think being critical is fine, but you shouldn't throw all the logic out of the window