In coastal California the commission situation becomes ludicrously lucrative to the top agents. This week a home in my community sold for $25,0000,000. One of my friends had the buy side, another had the sell side. The buy side agent will be involved in ~200,000,000 in transactions this year, a down year. In this community there are plenty of transactions north of $20,000,000. He just did another and had both sides of the deal for $50,000,000. At this level the commissions are usually 2.5%/2.5%. 5% of 25,000,000 is $1,250,000. The irony? High end home sales require much less work/effort than low end. Far fewer showings. No open houses, ever.

I used to work at a major real estate company and I know very well how intent they are on holding the listing service monopoly together. Redfin, Zillow, etc were all bets on the opening of the listing services that misunderstood the regulatory capture of the National, State and Local Realtor associations. They ended up selling ads to Realtors rather than opening up a new way for owners to sell their homes directly.