Bid bot owners would be big winners, but that should self correct partially in the price of bot bids. Social interaction and new accounts would be the big loser, especially small accounts currently making small amounts of money from minnow and dolphin up-votes of their comments and posts.
The only incentive the EIP truly creates that can be easily seen when simulated is incentive for growth of the bid bot economy.
One important incentive the EIP doesn't create is the incentive for good content creators making a few bucks from add revenue sharing on other platforms, to come and switch platforms in favor of STEEM.
Most likely not, bidbots will most likely recieve a lot of downvotes now that they are free which will make their business model much less sound.
It would, I think, be much more effective and way less disruptive to the content economy to combine a 67/33 split for upvotes with a 33/67 split for downvotes using some sort of curator/aythor buckets, instead having 50/50 for both.