The real problem is not usability (that has largely been addressed), it is software compatibility. Even though software like OpenOffice.org is 99% compatible with Microsoft Office, that last 1% still scares people off.
The thing is, 99% of office workers/non-gamers could switch to Linux without any significant problem. But if they're getting Windows free (pirated), they have little incentive. I am happy to see Microsoft crack down on piracy, as it forces people to accept the true cost of their choices.
I've been using Linux as my sole desktop operating system since 1997 or 1998. I manage to accomplish what I need to accomplish. I had one job where I occasionally needed to run a Windows application (we were using a MS SQL Server db for a Linux-hosted web application). For that, we bought VMWare, and I would just run Windows in there when I needed it.
Why dont we give microsoft amnesty for using pirated softwarez! Check this out
http://slashdot.org/articles/04/11/13/0036243.shtml?tid=133
You'll love this one:
A local smallish computer place had a bustling business. In addition to making no-name boxes all with preinstalled Windows and Office, they were also aggressivley selling at computer shows.
They were selling the OEM CD's at the computer shows: The store system customer got a "WinXX" directory full of *.cab files on their HD, but no CD's. In addition, they were selling "Preformatted" (They called them) Hard drives with Windows and Office.
They were also pocketing the state sales tax from the shows.
In the middle of all this, they were building a palatial house.
When it all came down, everything unravelled, the store closed, and the house stands, half done, with sheathing flapping in the wind.
If everyone hates Windows and Office so much, why do they steal it?