Well, a lot of the power of the UNIX shell comes form this and I see this as a major advantage over Windows. So no, I do not think Windows got it right.

Any kind of replacement should aim for the same conceptual simplicity and power. Sadly, I fear that people driving development nowadays are more interested in building unbreakable walled gardens for advertisement or app stores, or trying to squeeze down the some small gain when used on the cloud. I am more interested in general computing on the user side.