Is A Blog A Start-up?

I was thinking about how many people who were involved in start-ups and dot coms are bloggers. I know there's no big surprise there as the technology under many of the dot com start-ups was the same network technology that spawned blogs, but I wonder if there is more going on there. For instance, I feel like a blog is a perfect medium for trying out new things and failing and trying again. That's what the spirit of 1990 - 2000 was in start-ups. A blog is a slate and chalk -- a drawing board for innovation. A wonderfully forgiving, fluid, networked place to think and collaborate with colleagues. Is it any surprise so many entrepreneurs and entrepreneuses are using this interface to create new ways of working and thinking and sharing information?