> Some of the communities have announced they will remain dark until Reddit reverses their decision, so it will vary by community.
If the sub is popular enough Reddit will take it over and appoint new mods. Has happened before and will happen to some of the subs that choose to go dark as well.
> But this is, I think, where money comes into place; I fully expect some of the 'volunteers' for some of the more popular communities have found a way to make money off of it.
Definitely. Every (lead) moderator of a decently popular community is getting kickbacks one way or another. They do it for "free", but the only ones doing it without some compensation are absolute suckers.