Remember Windows 95? Windows 95 was better than Windows 3.1, had more features and a rediculously high system requirement set.
Back then, there was an operating system that was better, faster, easier to use, with more features and with lower system requirements compared to Windows 95.
Yes, you guessed right: BeOS. And there was the Macintosh too, of course.
But, people bought Windows 95. Why?
Because Compaq, Packerd Bell, etc. pre-installed Windows 95. Everyone learned how to operate that system, and people all over the world got very much used to it.
This was Microsoft's doing, because they left the computer builders with a choice: either sell bundled only with Windows or lose our support contracts.
And with American law that gives the big shots of the corperate world absolute freedom, nothing was done about this act of criminalism.
Although nowdays, Linux is a better and cheaper choice, and is backed by companies such as IBM and Novell, we can only hope that the computer builders will make the sensible choice.