It works the same way in old fashioned setups. Barring exceptional knowledge of two peoples’ compatibility, someone looking to introduce two people to each other would propose a setup between two similarly attractive, educated, income/wealth level people.
Otherwise, the matchmaker ends up losing reputation and participants trust them less due to higher chances of failure. It works the same way in business relationships too.
A broker’s value is in increasing the probability of transactions closing by restricting the pool of candidates to those likelier to close. Otherwise, they have no value.
While I agree to an extent, the issue I see is that business partners, friends, etc likely know you far better than a site you enter curated information into in order to reach an end goal ever will.
The desirability of your profile aside, it's entirely credibly that any profile you create is a poor representation, many people may not know what it is about themselves that others like.
It is a poor representation, you then meet in person and start from square one, no different than how online always has been. You just have to get your foot in the door with people you would have never otherwise met at all. Its just an additional venue amongst other venues also available.
Otherwise, the matchmaker ends up losing reputation and participants trust them less due to higher chances of failure. It works the same way in business relationships too.
A broker’s value is in increasing the probability of transactions closing by restricting the pool of candidates to those likelier to close. Otherwise, they have no value.