Windows really rules the desktop. Also enterprise level networking is mostly Windows. Some say RHEL, but Windows is still leading slightly. Certainly, in an ideal world, everyone would know bash like they know the english language, but that's ridiculous to expect.
Linux is hard to master, easy to just get your basic tasks done.
Windows can be easy to master, but hard to be a grandmaster 'so to speak'. Meaning, from my experience, you can do everything very easily within the GUI in windows. In fact, for a long time, most of it was done that way.
However, Powershell is light years ahead of BASH in terms of syntax and getting what you need done through the CLI, in the least amount of effort.
In PS, everything is an object, and every object has 50 - 100 + properties, that define and explain what each object does.
Each object is essentially laid out in a csv or spreadsheet, and it's easy for your computer to parse that information, or to grab what information you want and pipe it.
In linux however, it's very formulaic. It's all about creating formulas and parsing text, in a non organized way. To basically reduce it down like powershell, but in a much more difficult and troublesome way. Using sed, awk, grep, etc.
In powershell, all you have to do is | select-object -property processname, workingset, VM, CPU | sort-object CPU | export-csv 'example.csv'
However in LINUX it's like you have to test your commands before you run them, to be sure it reduced it properly, and then you can pipe it.
We have MS which has like so much money to pour into the PowerShell / .NET Framework API, and yet Bash is still more extensible at this time. It won't be for long however...
eventually Powershell will be better, just based on the object property model alone. If M$ can get their shit together, keeps promoting open source Power$hell things, then we may eventually have different flavors of super cars, essentially.
Either a Bugatti or a McClaren. Both will get the job done, it's just up to the users preference.
Clearly LINUX though still has the upper hand in terms of overall operating system adoption. Everything that mostly isn't interactive like your refigerator, or you dish washer, or your TV, is probably all using a form of NIX' operating system.
It's still VERY important to know Windows. Especially if you want to feel comfortable to walk up to any desktop operating system and be a fucking King.