I assume that 80% of the users are on one or two instances. Maybe the operators of those instances could sell it to a big publishing company, like Condé Nast or something. That way it will be easier to vertically integrate advertisement between traditional print media, online publications, and less formal online gathering places. It’s a win win at the end. The original operators get their bag, and the community keeps going while being supported by a successful business.

/s