They are, however, hiring C++ and C# programmers. This is not a "guess"...this is information obtained by reviewing Gamasutra, Gamedev
hmmm just had a quick browse of gamasutra + it doesnt really back up what youre saying its like
10 jobs of c or c++ -> 1 job c# (or java)
in fact i just done a search c# returns 19 matches, java returns 23!
try yourself if u dont believe me http://www.gamasutra.com/php-bin/jobs_display.php
fwiw c++ is 137 and c is 361 (might be some false hits there though with that term)