There's a popular essay by PG written in 2001 [0] about how Lisp gives a real advantage in creating a startup, and allowed them to beat competitors.
Do you think any current programming technology gives this kind of real world advantage? There are many "cool" techs but I don't think they give a real advantage in most cases.
Probably about 10 years ago using Python or Ruby still qualified as "beating the averages", but nowadays I think the "startup tech" has taken over the world so everyone is already using the leaner, simpler and more productive languages and frameworks (instead of say J2EE or C++).
[0] http://www.paulgraham.com/avg.html