If we look historically at Mussolini, we can call it encroaching fascism, the wedding and control of corporate power over the government.

Self interest is not essentially human nature. This is another myth that won't die.
More scientists are coming on board with the idea that the reason we survive is because we have an altruistic streak. The amusing idea that everyone is out for Number One is a fallacy maintained by the Ayn Randers and their damaging effect on constructive social programs. This was misnamed "Social Darwinism" for which Darwin, himself would have objected. It's not in the "Origin of Species". Even the term "Survival of the Fittest" was coined by English philosopher, Herbert Spencer and is not found in the "Origin".

Capitalism has its flaws. America right now is not even Capitalist but an Oligarchy and Plutocracy.''

No purely Capitalist system has ever worked. This ostensible one isn't working at all for the majority of its citizens.

However, during the Roosevelt years, we saw a kind of socialism that worked very well for a short period of time through government agencies and a socialist concept, Social Security. Trade unionism did a lot of good, during that time. Socialists and communists were responsible for inroads in civil rights, women's rights, worker's rights and curbing the excesses of corporations and the military industrial complex.