Did you even read the article?
Even if Linux is better than Windows on the server end or has a lower tco that won't matter because Microsoft is going to create a secure desktop that can only interface with palladium enabled servers. The result is that they will quickly gain just as much of a market share on the server end as they have on the desktop end (about 95%)
Linux advocates should be shaking in their boots. Bill Gates is very competitive (have you ever read the book Hard Drive? Bill Gates has thwarted every entity that has endangered Microsoft (Lotus, Digital Research, Apple, the US govt.) Linux is a threat to his company, and Bill Gates isn't going to take it lying down. He's already plotted how to destroy Linux, and it's only a matter of time before he makes his move)