Could you answer this question, please?
Do you think that people's selfish and superfluous ambitions are more important than the common good?
By common good I mean that all people have the opportunity to participate to the functioning of the economic system.
No. One of the best ways to ensure people have "the ability to participate to the functioning of the economic system," and even more so, to better their lives within that economic system, is to give them the ability to engage in private enterprise.
They are not assumptions.
They really are, though. And false ones, as I've now explained to you.
Do you really think that planet Earth has the resources, the lands and the space to support capitalism?
Yes.
Or that we live in an extremely overpopulated world with scarce resources?
I haven't seen the evidence that we're overpopulated as a planet. We're overcrowded in some areas.
Should the State limit how many children people are allowed to have? They tried that in China. How has that gone for them?