It doesn't though.... having your time wasted by these morons utterly stops you from being more productive, its counter productive. It stops you from prepping, photoing, finishing, advertising, perfecting, researching, bidding, the time wasted is totally detrimental to your business, ..... it stops you from doing all the stuff you need to do to earn money, plus it eats into the family time. Qualifying customers properly and asking for a show of commitment calls their bluff, as soon as they then make excuses you know..... Before anyone says, its different for a site clearly.
I know you don't agree Nick, but your waster makes me fucking angry and is why I don't facilitate them. You gain a lot more by valuing your time and not allowing it to be wasted.