I just read a great essay by Paul Graham that made me stop dead in my mental tracks and go oh yea... damn! I love Paul's writing. He's generally dead on with his observations and this one's right in line with that trend.
His claim? Microsoft died in 2005.
1) Google. Need I say more?
3) Broadband internet. The faster your connection, the less you need the desktop.
4) Apple. Ever check out anyone working on what's next? Chances are he or she's on a Mac. Windows? For grandma.
Read the whole thing. It's here and by Paul Graham standards, fairly short. Anyone who's been around for awhile will go.. oh, yea... that's it. Damn!