[neolog]

I can think of a bunch of small organizations. Together that's enough people to fill a large organization. Maybe there are some other properties of large organizations that make it impossible to compose them out of altruistic people.

[WalterBright]

I can't think of any large organization that operates without people motivated by their self interest. Can you?

[neolog]

I can't think of any large organizations containing only people who are financially secure, which seems like basically a prerequisite.