Windows is more popular due to it historically being bundled with all PCs. Linux was untill very recently seen as a server OS and it is only due to massive advances in desktop software that it can now compete with Windows for a home user. With markets such as China and India (The two most populous countries in the world) both using linux in greater and greater numbers I forsee Linux outsripping Windows with the next 5-10 years. Such is Microsofts worry abouthis that they are trying to offer 'cut down' versions of Windows to these nations to tempt users who quite simply cannot afford teh cost of Windows XP.
Do I have a bee in my bonnet? maybe a little one but probably for not the reason you think. I have no issue with people making money from selling IT services(after all that is what I do for a living!). What I do disagree with is when substandard software with enormous security holes in isn't patched as they would rather add 'Feature X' instead. This leaves end users with problems that can cost them financially to fix or though massive inconvienience through downtime. It also means I spend far more time than I should fixing friends computers. In over 7 years of using linux I have NEVER had an exploit or system bug cost me any downtime. I like everyone else want my computer to work when I need it. Linux offers me that stability and resilience. It also fits with my commercial awareness
Ian