Please read on this weeks LWN.net's feature page the article »The return of the Unix wars?« and notice that it doesn't cover the big elephant in the room, concerning fragmentation: Not fragmentation within Linux, but fragmentation within the Open Source Un*x variants. Yes, the Unix wars are back and LP is their war lord. LP's work strives to go ahead in a bold fashion and he thinks we are sufficiently strong to ignore other Unix systems, that we may go bold forward to our own island of functionality.
Well, how's your Linux market share today? Do you think it's sufficient to be so self confident, or do you think you should play nice with the other folks from your family? Some of us seems to think that we can eventually shun our stinking brethren *BSD users (and other Unix users), and that we'll be doing good for it. Will that be the case?
And this comes from the community that hails Linus for his insistence on backward compatibility on kernel ABIs. If it comes to user land, they ignore his insights.