Wow. I've had what has felt to me like a varied and interesting career across the nearly-25 years I've been writing code for money, but with one small exception everything I've ever been paid for fits within this survey's "other" category. That's... an odd feeling.
Companies will eventually learn they'll need to accept Ruby/JS/Python in their stack to get this new swathe of cheap labor, and you'll see these devs slowly transition towards enterprise.
They already have, and I'm not cheaper because I'm currently focused on node.