So why downvote me? We've got this already in our buyer's agency agreements - if you as a buyer want to negotiate compensation with your agent, you have the ability to do that. Similarly, in both states where I work, you as a seller have had the ability to choose what, if any, compensation you want to offer to a buyer's broker. None of this is actually that different from how you negotiate (or not) with any other professional - your lawyer, your accountant, your financial advisor, etc.
Negotiation is not an effective strategy when there is active collusion to fix prices. You are commenting on a story where a jury just found that had been systematically done.