"Linux is more secure, more stable, and less costly then competing proprietary offerings so why is it so hard to buy and sell systems with GNU/Linux preinstalled? This is a question that I and many other like minded individuals have been considering for awhile now and after you get past all the hype, you'll see that the primary opposition is hype (or more accurately marketing).
"Large scale marketing campaigns are traditionally only possible for large corporations, so in the realm of desktop operating systems, this translates into Microsoft and Apple which spend millions of dollars annually on marketing. The challenge is that no one owns GNU/Linux (not even RMS or Torvalds would try to make such a bold claim), so how do we create a marketing campaign of our own...?"