> home built PC market is probably larger than the entire Mac market. I don't have any figures to back this up but based on Windows' market share and my experience, 20% of PC's I've seen over the years are home built.

How does this make the release of a chassis relevant to the release of a Mac Pro? The chassis doesn't even have the interesting characteristics of the Mac Pro chassis. I was hoping it might be something like that, but alas. The fact that a market is sizable doesn't make it universally relevant.

> There is going to be some overlap.

There is bound to be some overlap between Mac users and people who eat at McDonalds (both groups are large enough that it's inevitable), but that overlap isn't enough to make comments about McDonalds relevant to stories about the Mac Pro.