Did you know that, by default, Windows PowerShell doesn’t allow normal users to run scripts?
Yeah it's called access control, which is a basic tenant of IT security, letting any knucklehead run PS scripts is heading for disaster at worst, and a huge headache at best.
Also, the amount of users who have access to Unix in any environment is reasonably small, and they are usually vetted and trusted individuals, whereas most of the business segment of any organization is using Windows.
So do you really think Ken in shipping needs to run some PS scripts? Or Derek in Sales, or Joan in HR, or Ralph in maintenance?