George, I really like your laundry-list post - and you're right, it could be much longer (at the very least, break "web programming" down into frameworks). And it inspires a thought that is only tangentially related to the OP's point, and that is the utility of fragmentation. There's a curious phenomena that when you list all of the languages out like that they all seem so...equivalent.
And yet they are only equivalent in the same way human languages are: there is a shared core of ideas that are expressible in any language, and then there are things which are easier to express in some, and which cannot be expressed in some others.
The proliferation of computer languages seems to be strong evidence to the claim that programmers do NOT believe in the equivalence of languages. And perhaps pg is right, that we already have a winner, Lisp, and most people are just too blind to see it.
I have encountered a few (too few) companies who recognize the equivalence of languages, and recognize that moving from, say, Python to Java isn't very difficult and isn't nearly the same gulf as trying to move from C to Java.
That said, the proliferation of language/framework-of-the-week projects is a serious drag on the industry. Its too easy right now to roll your own framework/JVM language/interpreter. The temptation is too great to manufacture a framework/JVM language/interpreter to solve your sort-of unique problem instead of adapting an existing one to your needs through modifications or extensions. In addition to clouding the buzzword pool, it hurts the position of existing languages because the energy that could have gone into improving language/framework X now goes into developing Y based on X instead.
And yet they are only equivalent in the same way human languages are: there is a shared core of ideas that are expressible in any language, and then there are things which are easier to express in some, and which cannot be expressed in some others.
The proliferation of computer languages seems to be strong evidence to the claim that programmers do NOT believe in the equivalence of languages. And perhaps pg is right, that we already have a winner, Lisp, and most people are just too blind to see it.