Windows PowerShell does this and I love it. I don’t understand why people wouldn’t want this
If it presented a real popup for file selection, combining both worlds (tab to longest match, untab to undo, up-down to navigate), that would be great. But it doesn’t.
In a PowerShell environment specifically, you usually end up having to backspace a dozen or more characters completed from a long command name before you can resume narrowing the search. It's less of a problem on a Unix shell where commands tend to be short.