Exactly. The Unix/Linux world has not gone the way of a Powershell type shell for the simple reason that for the uses where we want an object-oriented API, we have a plethora of scripting languages designed for that purpose, and we all have our own favourites.

When we want a text oriented API we use shell scripts. When we want an object oriented API we pick our favourite scripting language - which may very well for many of us be different for different problem domains.