I posted this answer:
There are no classes in a capitalist--that is, fully free--society. No one is locked into a caste from which he cannot escape. Under capitalism, the rights of all individuals to live peacefully--to take whatever actions economically and intellectually one deems necessary to the furtherance of one's well-being--are fully protected by the government. The only condition of this freedom is to respect the same rights of others to live by their judgement, and to deal with others only on a voluntary, consensual basis--or peacefully go their separate ways, agreeing to live and let live. This is accomplished by banning aggressive (or intiatory) force from human relationships, including relations between private citizens and government officials.
Of course, given the individual diversity of humanity in terms of ability, ambition, interests, moral character, personal circumstances, and so on, there will be a wide diversity of individual economic and social outcomes. But that is the natural consequence of a free society. But no one is preordained or “locked in” to any particular outcome. Thus, there are no classes under capitalism.
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