I am very surprised that many of these recruiters can stay in business. Even if internal HR departments are lazy, how do they get candidates that actually pass

I am very surprised that many of these recruiters can stay in business. Even if internal HR departments are lazy, how do they get candidates that actually pass interviews? Sometimes I wonder if it's a field with a low barrier to entry, that just weeds people out. It's relatively easy to be a stock broker, but hard to stay in it and make money. Similar with Real Estate. The one caveat on this... Recruiters are also people working for a dollar. One day many of us will need them too. Burning bridges with anyone in the hiring process has limited upside, and potentially large downside. That said, if someone rejects both the polite "I'm not interested" and the less polite, "I mean I'm really really not interested" then it does become fair game. In this case, it's hard to imagine they're much more than a quarter step up the food chain from the folks spamming me about viagra.