From what I (think I) know about the web development business, I'm guessing it had more to due with the fact that this developer found a goldmine of customers. Then again, maybe the developer is very concerned about clients from hell so he can quote princely sums to clients he or she isn't sure are worth the hassle. I suppose that's still a measure of risk. Not risk that you will be sued, but risk that a demanding client will require special treatment and hand-holding.