It's great that Linux is out there. I use Ubuntu for the virtual machine I use exclusively for Facebook. I use another copy for the virtual machine I use exclusively for Linkedin, and Xbuntu for the one by which I access Gmail.
The very fact I use Linux at all places me in a tiny slice of the computer culture - the fact that I am running Linux in a virtual machine is without a doubt not a particularly distinguishing feature.
I've been reading Hackers and Painters. And the problem with Linux is that it's proponents lack empathy (in Paul Graham's sense). Nobody is going to give their mother a Linux box - PG even talks about his mother's Mac needing an upgrade.
There aren't any Linux laptops at your local BestBuy today because regular people don't want them...and BestBuy's GeekSquad damn sure doesn't want to support them. It's not Microsoft. It's the market.