Why will it be a higher cost to buyers? At the macro level, aren’t the transaction costs effectively priced in? Is the idea that the home has some absolute value that exists independently of the cost structure of the market it trades in (so the buyer paying commission directly is doing so “on top of” this amount as it’s valued under the status quo)?
Is it mainly a question of categorizing the commission as “a cost” rather than “hidden in the seller’s asking price therefore part of the value of the home”?
Otherwise, why wouldn’t the buyer who now says “I have $100,000, so I’ll buy a $100,000 house” instead say “I have $100,000, and I know my agent is going to charge me around $3,000, so I’ve got to buy a $97,000 house instead”? If that becomes the new norm, wouldn’t all sellers find that people who could buy at $100,000 before can only buy at $97,000 now, and have to price their homes accordingly, making it a wash?
If it were me, I feel like I’d want to hire my agent at a flat rate if I could, to reward them for finding me a better deal rather than incentivize them to make more by selling me more. But then again maybe that’s part of the higher cost to buyers that you mention: maybe there’s no question that buyers’ agents will be able to squeeze the buyers for more commission directly than they presently get out of the sellers?