Never happen. No bot could do what my wife does for clients. The hand-holding, back-covering, educating, negotiating, etc, etc ad-infinitum personal service cannot be done by a robot. The general public would totally reject this if subjected to it. Dumb idea IMO. If it catches on...won't last long as most users would be 1 timers after being burned by it in one of the numerous ways a real estate transaction can go wrong.
Will never happen in MA. Way too many rules and regulations. For buyers, why pay $1500 when a realtor is free (realtors paid by sellers)? For sellers, you an expert in the market? You think you know all the laws? When I was originating loans, I hated fisbos. Just before closing I would ask the seller for the Title V and they would ask, “what is that?” I even tried to buy a house from a fisbo and backed out because the seller clearly didn’t know what they were doing.