In a sense, I have to agree. I have not seen any other distributions go as far as Ubuntu, nor do I see any going as far as Ubuntu at this point. The consumer Linux market (Red Hat, Novell, and Linspire which hasn’t quit yet…) is coming to a close, but the freely available desktop distributions are moving forward. At the forefront of desktop Linux, Ubuntu has taken the lead. That being said, I do not believe Ubuntu should be the only distribution, but we as a Linux community need to have a leader, and currently, that leader is Ubuntu.
So, what does this mean for desktop Linux? Well, for one, Ubuntu will become the major competitor in the desktop market, along with Mac OS X and Windows. This area could get interesting, and I imagine it will be fun to watch.