Sometimes I wonder whether Perl left a huge code base behind, like COBOL did, but I suspect it didn't, mostly due to the fact that Perl is a dynamically typed language used mainly for web development and sysadmin scripting.
Perl unlike Java, which had no serious alternative in its niche, unfortunately has an uncertain future in my opinion. Not that Perl is going to disappear suddenly like coffee script, but as the old timers retire or pass away in the next decades, I can certainly see the language slowly "evaporating".