I can't work out if you're trollling or not.
You realise, that "100 million" figure is just taken from the deaths that occurred under Communist regimes, not as a deliberate consequence of their actions.
Also, you're equivocating on Capitalism and Communism with the idea in the former case, and one particular implementation in the latter.
By "Communism" you mean "regimes that called themselves communist". If, more honestly by capitalism you meant, "regimes that called themselves capitalist" then we would start including Vietnam, Iraq, etc. etc. etc.
And you're equivocating on "collectivism" by which you mean the both, say, Mao's agricultural policies and there being groups that have leaders.
Businesses are collectives. Capitalism, as trade between businesses, is a mostly collectivised system.
Humans goals are foundationally composed of all those which follow from their identity: as they conceive themselves as being part of a group, and as they conceive of their identity free of any membership.
This gives rise to nations, businesses, universities, football teams, etc. AND to personal projects, individual enterprise, and so on.
The difference between communism-in-practice and capitalism-in-practice has nothing to do with the existence of groups, but rather the political power structures which surround those groups: all communist regimes were dictatorships.
The difference between capitalism-in-theory and communism-in-theory has, again, nothing to do with the existence of groups -- but what (economic) rights you take to be fundamental.