I know the following description is not very accurate or maybe not even fair, but sounded very poetic (paraphrasing an unverified source):

Modern capitalism: defending and protecting the interests of a small group, an economic class that, while you do not belong to, aspire that someday you will. (Replace “economic” with “cleric”, and you will get a religion.)

Modern socialism: defending the interests of a large majority, an economic class that, while you may no longer belong to, you have not forgotten that someday you did (the very reason that modern capitalists often look down on modern socialists).