Why is Liberterianism and Austrian economics not Popular?

Nonsense, in fact, most good people tend to be statists.

responsibility is a prerequisite not a direct cause of AE.

Good point.

Immoral is “good”?

Anyone who is OK with government without consent of the governed is immoral. They are OK with subjecting others to theft in return for a feeling of being safer.

They don’t tend to see it like that.

Liberty means responsibility. That is why most men dread it.

-George Bernard Shaw