(yes, I know this was the author quoting /someone else/ but I think the rest of the article was saying something very similar, albeit in a much more tactful way.)
Huh. I guess I have a similar exploitive attitude, but it drives me in the opposite direction. Having poor friends is /incredibly useful/ - need help moving but don't want to reciprocate? call up your highschool buddy who works at home depot. He'll be happy to help you out for a few bucks. It's only weird if you make it weird.
I've always kind of gravitated towards people who are smarter than I am, so my highschool buddies were an awesome recruiting ground. People who are smart but work cr-p jobs because they lack the social skills or confidence to advance make great employees for your small side businesses. And the great thing about that is I'm helping my friend while I'm exploiting him or her. Most of the people I've hired in this manner have gone on to get "real jobs" after gaining experience working for me.
Of course, all this is predicated on your ability to live a different lifestyle from your friends, and being willing to fire a friend. Never hire anyone you can't fire. On the other hand, if you loose a friend every time you fire someone, you are doing it wrong.