But even ignoring that, suppose all >15M subreddit suddenly get salaried mods. Don't you think the mods of e.g. a 13M subreddit would want a piece of the cake too, and would strike to get it? Or would they just wait around and keep working until their subreddit is also "siezed" by Reddit inc.
Is there any example of a community which successfully runs on mixed salaried/volunteer moderator labour in such a way?