Then sell the IP. I’d donate to that. I don’t know what the operating costs are on running servers with no content development but it’s obviously affordable out of pocket. Without a billing dept, legal and marketing fees, things aren’t likely to get out of hand.
Part of why crowdfunding works better than the sub model is it only takes a few donors with deep pockets as opposed to thousands of subbers who only contribute pocket change every month.
I just look at MMOs like Pantheon and how 5 years later how difficult (and expensive) it apparently is to build a game from scratch. CoH is done and has a pretty big audience.