If you were to log in, you'd be able to get more information on your fellow community member.
Philip makes a number of interesting points, but neglects to address one great strength of the java-based Application server market, which includes the likes of Weblogic: available programmers. There are far more people with Java skills than there are Tcl. A search of resumes on dice.com turned up 3990 candidates who claim Java experience, while 84 claim Tcl experience. A search for Weblogic turns up 43 resumes, while AOLServer turns up 1. Forgive a weak analogy, but it's like buying an Jaguar over a Ford. Which is going to be easier to find a replacement mechanic for? The Ford may be the crappier vehicle, but it's far easier to maintain if you're not the primary mechanic on it. So when you need to extend or fix your AOLserver implmentation, who do you call? Some brilliant college kid with no accountability or Philip's company, ArsDigita? On second thought, perhaps Philip is even smarter than he appears.