Squek:
“The current accepted structure for compensating a shadchan is similar to a broker. The shadchan, like a broker,”
Correct
And it clearly isn’t working as evidenced by the frustration that singles find themselves in and the abuse shadchanim suffer.
Change is necessary (but until it becomes the norm no one is obligated by a halacha standpoint).
My point just was, when you pay nothing-expect nothing.