lak
I totally agree that there's this very small, very insular part of the world that thinks it's dead, but that part of the world is apparently not working in large companies, or trading files with professionals in any profession other than design (e.g., try to find an Architect using Mac-based software -- they can't, because they couldn't trade files with each other or clients).
I'll believe MS is dead when they have, say, less than 70% of the world's computers running their operating system and when my corporate clients stop asking for files in Word format. Until then, they're just a monopoly that has massive amounts of power but that the cool kids aren't interested in.
It's like saying POTS telephones are dead -- they might not be interesting, but that's a big difference from being dead.
You have to be a lot more willing to fire, though; you don't want to find yourself owing stock to someone who wasn't productive for a year just because you couldn't think of the right way to fire him/her.
I don't have problems with loneliness, and never really did even before I had an active community; I just have problems making competent decisions, especially since I'm a sysadmin turned developer, so I'm a bit out of water doing a software startup.
All you web guys need to quit yer complaining; at least you've got thousands of other entrepreneurs who are in the same boat. There is almost no one else in the sysadmin space, and pretty much everyone's eyes just glaze over when I mention that I'm working on infrastructure, not AJAXy web 2.0 bling.
Look at Google -- they tried to sell their algorithm so they could stay in school, but no one was interested, so they had to put up or shut up. If a bunch of people already thought your idea was a good idea, it'd effectively be a mature space.