These "elitists" want to keep THEIR money and power.
Bernie is a stinking SOCIALIST/MARXIST and wants ALL of our money; including theirs!
Here is an interpretation of what Sanders probably means by socialism. He has made repeated mention of the kind seen in Denmark and other Scandinavian countries.
Here is an article on the kind of Marxist/Leninist pro Soviet/Russia socialism that you, and I, are afraid would be very dangerous to our country.
https://en.wikipedia.org/wiki/Party_for_Socialism_and_Liberation