Some people rellay think that Windows is part of the computer.But I installed Ubuntu for a guy who have bought a computers few weeks ago, and he is using it pretty well. How is it possible?He don't know to much about computers  so it's much more simple to use Ubuntu.The same principle is used by MS. You just need to look at statics Well  it's obviously that MS is losing it's market share  but at the same time I fear that we'll lose it to Apple.