I'm going to go out on a limb and say all you people freaking out over not being able to buy a shiny new Mac Pro every year aren't really pro business users.
A Pro business user doesn't refresh their gear just because some new version comes up. They update their gear when it NEEDS to be upgraded. Mac Pro's have always been designed to have a longer shelf life than the iMacs.
By using 3 year old hardware? And overcharging for garbage?