Linux To Ring Up $35B By 2008
al@opensourcebrowser.com pastes "For a theoretically free operating system, Linux is -- and will continue to be -- a cash cow, a research firm said Wednesday as it predicted the OS will bring in more than $35 billion in revenues by 2008. Framingham, Mass.-based IDC said that overall revenue for servers, desktops, and packaged software running on Linux will reach $35.7 billion in the next four years."
See here
So, not only are they counting the hardware that linux is running on as being "spent on linux," they're also counting existing hardware on which linux will be installed as being "spent" on linux as well.
(source)