Given time something will likely be needed to keep the reward model working and this could provide a very good option. Though for those wishing to keep their posts "Ad free" what would happen? Would the ads be forced or could people opt out? If they did would it freeze the potential for income from that post and thus discourage others from participation as a result? Could be interesting to see how it all unfolds in the future.
RE: Will Steemit Use Pay-Per-Click Advertising And Will Content Creators Get A Share Of The Profits?