I think it is very savvy for Apple to not "attack future customers". People building a hackintosh are usually
a) aware what they are doing is breaking some rules
b) technically savvy
Often they are PC hobbyists whose pride has kept them from every actually buying "something with that apple logo" on it. Once they start using OS X on a daily basis, I would think quite a few would jump off the Windows platform. Reading the hackintosh forums seems to confirm this. PC hobbyists often have some cash around ($800 video cards?), so nobody is surprised when a real Mac makes it into their collection a while later.
Smart move Apple.
Why Does Apple Allow Personal Hackintoshes?