As recently as a little over 9 years ago Microsoft had a market cap of $586 billion, while Apple's was a mere $17 billion. MSFT investors have since lost $421 billion, while AAPL investors have gained $95 billion. In my first post on this subject last October, I suggested AAPL could surpass MSFT's market cap within a few years. One reader said it would happen in less than a year. He has a good chance of being right.
Almost 90% of the people who visit this blog use Windows-based operating systems. 74% use Windows XP, 13% use Windows Vista, and 10% use Macs. Microsoft's only significant product introduction in recent years (Vista) will soon be eclipsed by the Mac OS, I predict. Given the relative failure of Vista, it's unlikely that many XP users will switch to the upcoming release of Vista 7 for at least a year or two. Macs will likely be the computer of choice for increasing numbers of people who want to switch from XP to a more modern operating system. Windows XP is almost 8 years old, while Apple's Mac OS X will see its sixth major upgrade this year, perhaps as early as June or July. If you haven't tried a Mac recently, you really should. And did I mention that there are no Mac viruses to worry about?
Full disclosure: I own several Macs and am long AAPL at the time of this writing.