It's about incentives. Right now, mods and Reddit have very different goals. When you tie moderator compensation to subreddit financial success, suddenly the incentives are now aligned towards maximizing the number of eyeballs on a given subreddit, because eyeballs mean conversions and conversions mean revenue, and revenue means happy shareholders, moderators.

As for the users, we could debate all day what's best for them, but the war between mods and Reddit would be over, and that's incredibly good for users.