Most people are not going to run into most of those, whether or not they use Python. They are niches. Sure, Python is more widespread, but it's still only one o

Most people are not going to run into most of those, whether or not they use Python. They are niches. Sure, Python is more widespread, but it's still only one of many. "Nobody" uses Python for 2D games. "Nobody" uses Ruby either, but there's Dragonruby (write once, deploy to Windows, Mac, Linux, Web Assembly, iOS, Android, Nintendo Switch, XBOX One, and PS4). There's interop for many other programming languages, including several options for embedding Python code in Ruby (and the reverse). I've come across Ruby embedded more places than I've come across embedded Python (the number of companies I've come across both are in the single digits). But ultimately it doesn't matter. If you pick jobs based on currently used languages rather than what you want to work on, you're painting yourself into a corner with either language.