Communist and particularly Marxist aren't talking about opportunity to succeed but opportunity of outcome which they themselves could not achieve. Most failed to achieve anything of value to others but at their core, loathed having to prove themselves worthy and therefore were often found wanting; and yes, most hard core communist and marxist could afford to be, by inheritance alone if not by the keeping of others that felt sorry for them.
These are the great unwashed and will always fail in the attainment of their utopia because humans are just not the same and never will be...thank goodness, I say.

I think Ayn Rand was not only accurate in her dissertation but was harsher than my commentary here...She lived it.