Dating markets are lemon markets. The classical example of a lemon market was the used car market - most people who bought "lemons" (unreliable cars) would exploit information asymmetry and sell them on the used market, and over time the reputation of the used car market deteriorated to the point where it was affecting the value of new cars. The car manufacturers solved the problem by introducing gatekeepers - certified used car programs, that certified that the cars weren't lemons.
So who are the "lemons" on dating markets, which bring down the reputation of dating markets for the rest of the players? People who aren't in an emotionally healthy place to make commitments; people who are "players"; people who are violent; etc. It is our experience dealing with the lemons who stay on the dating market that ruins the reputation of the entire dating market and makes dealing with the market difficult.
So the solution is to introduce a gatekeeper. What does a gatekeeper look like? A clinically trained psychologist-cum-matchmaker (pun not intended) who can certify that the matches you are set up with are people with a track record of dealing honestly (for your personal definition of honest) in the dating market. Don't like your gatekeeper? Pick a different one.
So far as I can tell, healthy dating markets are limited to scale by the need to hire such competent human gatekeepers. If anyone has an idea how to automate the gatekeeping in a humane way - you're sitting on a gold mine.