Y'know, I was just going to mention Fandom. I have no idea how well this will work for Wikipedia, but I know something like this can work great for games.
Fandom is straight up harmful to game communities, and I think federation makes a lot of sense with per-game / series / etc. instances.
I'll look at this a bit more later, quite interesting idea.
Mr. Wikipedia wanted to make money off wikipedia but couldn't because it was a nonprofit, so made Wikia to profit off of.
Worst they could do on Wikipedia is e-beg and then spam the email of anyone who actually sends them money (fucking assholes) but the limits are off for Wikia they can absolutely cake that as shit full of ads and spyware as they can fit.