"There are two reasons founders resist going out and recruiting users individually. One is a combination of shyness and laziness. They'd rather sit at home writing code than go out and talk to a bunch of strangers and probably be rejected by most of them. But for a startup to succeed, at least one founder (usually the CEO) will have to spend a lot of time on sales and marketing."

Mike Arrington, before he was of Techcrunch fame, recruited us personally for the new company he had been hired as CEO/President of, Pool.com. Lest anyone thinks he does not know how to hustle he does. He can and was very persistent and determined with anything I threw at him. That ended up being a great relationship lasting many many years after Mike left the company. I feel fairly certain that a regular biz dev guy would have given up with what I threw at Mike. You may not have heard of Pool.com but they made a ton of money and were very successful.