you are an idiot.
say you've got an enterprise company. you supply them with a large
quantity of desktop pcs you've built yourself. these may end up at
various sites, being used at weekends and holidays. you're going to
support them all, are you? on site response with a guaranteed SLA?
you can guarantee exactly the same configuration will be available for
a minimum of say, 3 years, so that their IT guys can standardise a
build image for them, are you?
i build all my own systems and a lot for other people, but for
corporate use you want something with a low Total Cost of Ownership,
not just cheap.

ric