Windows 10 since version 1803 (?) helpfully offers to open a Powershell prompt instead:
Which is great, if I want Powershell, which I don't. Apparently there's no way to revert or override this helpful 'feature', so I went around the side door - I shift-clicked to open Powershell, then typed "cmd" at the Powershell prompt, et voila, I get a good old command prompt in the folder:
