Why is that depressing? PHP is just as capable as everything else out there. It may not be our first choice but its use is not depressing.

One billion devices run Java!

I'd love to see that number. Are those the parked domains or actual sites? I'm guessing Wordpress adds to those numbers.

This is a very misleading stat. A single path or subdomain on the website needs to be running PHP for the entire site to count as “powered by PHP”. Plus it excludes sites whose server-side tech cannot be identified at all (aka properly configured ones).

are there really so few static web sites?