A common word for Extreme/Pure Capirtalism is Fascism. During the 1930s and 1940s Europe was commonly run by a Fascist or a Communist regime. The Great Depression lead to extremist political ideologies taking over. Both Fascism and Communism are forms of oppressive dictatorships.
Fascists believe in:
That power and wealth are sufficient for greatness, ethics are unimportant;
That war can be good;
That governments can limit freedom of speech and the press when they choose;
That people can be locked up indefinitely without trial if that is convenient to government;
That the only value of the environment is that wealth can be got from it (climate change can be ignored for high profits in the short term).