Gawker and Weblogs Inc have come close and All-Baseball/MVN, Sportsblogs, and Toaster have a nice niche, but aside from David Pinto, I don't know any full time bloggers.
I think Carroll should stick to doing what he does good like his UTF column and baseball. What I think he does not realize is that blogging is just starting to hit its stride. As you can see from the sidebar here on this site, I think there are more than ten blogs worth reading.
Speaking of bloggers that have been around a while, these are the ones that I first bookmarked.