My opinion as a Windows employee? Good riddance.
WGA is DRM for operating systems. It Does Not Work. People will copy Windows Vista, no matter what we do.
On the other hand, it does resoundingly suck that shady system resellers are selling cracked versions of Vista. WGA did help to stamp that out... a bit.
The long term solution? Don't sell Windows for so bloody much. I think Windows is worth more than $0 - it does contain a lot of new technology, after all.
I don't think the Ultimate version is worth $200, though.
Maybe... $100? How much would you pay?