Also, social capital. If you are already somewhat networked and you start telling everyone to "talk to your agent", I would guess lots of people would turn up their noses. Yes, it should be an absolutely professional relationship and all, but just ask people in Cleveland about Lebron or people in Boston about Ray Allen how they feel about them leaving and you'll see that there is more to money in any kind of relationship.
Another reason: we computer people love automation and streamlining of processes. If this actually becomes a thing, you will start seeing lots of copycats or actual startups trying to emulate parts of whatever process become established. This would just lead to either a new market norm (like the way YC has changed seed-stage funding) or forcing players in this space to go for a new level of risk/reward (the high-6-7 figure earners)
About the "Jewish" part, again I apologize for my ignorance. I think I wrote Jewish when I meant Jew (as in ethnic/cultural background, not religion? Semitic would be better?) and I was just going for last names. Coincidentally, if I had to guess, Rosenhaus sounds like a Jewish name to me.