What you see on-line is mostly the fashion part of the IT industry. Common Lisp is alive and kicking, but it's not fashionable (except maybe as a counterculture).
There are many more stories like that. I was surprised to learn that Delphi is alive and well, and people earn their bread with it writing applications for various industries.
It's easy to see the world skewed by blog posts. There's growing use of Perl[1] outside of the 'SF startup scene' echo chamber, huge quantity of new projects in Oracle APEX, power plant simulations in Tcl[2] and the gardens full of thousand flowers blooming.
