Would want to look at how people use Power Shell on Windows and compare to how people use bash/tools/procfs/Python/C on *nix.

I think that, on *nix, Power Shell loses to cli tools/bash/procfs for trivial problems, to Python for simple problems, and to native strongly typed languages for complicated problems.

Many Windows APIs are COM based, for both arguments and results, so an OO-based scripting language is helpful.

Unix APIs tend to be less strongly typed. Mostly lists of lists of strings and ints.

Is there really a recent increase in shells on Linux? I can only think of zsh and fish.