Linux is coming of age
A flaw in the argument is that Linux relies on Open Source projects. The commercial scene of Linux is the most exciting. Getting more and more companies to port their software over to Linux will ensure that the comments shared in the article are obsolete.
To help promote Linux commercial software there is currently being developed an extensive Linux Product Guide at http://www.firstlinux.com/product/. With the likes of Creative and other hardware manufacturers now leaning over to Linux, it looks VERY exciting!