Most of the reason Reddit works at all is because of the huge number of volunteers doing moderation because they're passionate about their sub. If Reddit had to

Most of the reason Reddit works at all is because of the huge number of volunteers doing moderation because they're passionate about their sub. If Reddit had to pay for moderators they would be bankrupt in a very short time. And even if it did replace mods with its own people (whether paid or not) the quality of the sub will drop.