I was hoping to try out Turtle last summer but didn't get around to it. And had looked into Azerothcore. I hope turtle open sources (if they haven't already and they are allowed to).
I do think part of the problem is payment to cover dev time is actually profit.
I profit from work, although they are just paying me for my time really.
Payment to devs could be considered profit, but profit for the actual people, not the project as a whole and its owners. Also, remember, it's still work, even if it's work on a game. There are reasons not to call pay you get from work "profit"