So the only "sucessful" system is ......what?
Where?
Is there any government that has One Idealogical system?
Korea Perhaps.....
Its a little silly to believe any system is "ridiculous" because it doesn't manifest itself in its pure form anywhere on Earth. The reaction is probably a result of a deep ignorance of most things, but political systems in particular.
I'll give you a successful system.....the United States of America. It has generated the most powerful and successful country in history. What made America turn the corner from a second rate agrarian system with a fear of global entanglements was the emergence of a strong central government
It was a strong central government that built the railroads, laid a communications structure, built our highways, established the military that is the strongest on earth. It is also a strong central government that established Social Security, looked out for the peoples welfare, education and health
None of it could have happened with Libertarians calling the shots