Admittedly, pecking order is a rule of nature, even though our American forefathers promoted the concept that "all men are created equal." That is not so today in our country where the biggest bird not only has the advantage of eating the most seed, but shrieking if the little birds attempt to eat at all.
As James Heckman says, kids pick up the "soft skills" in preschool that allow them to work with others. "Valuable skills like how to resolve conflicts, how to share, how to negotiate, and how to talk things out."
Last time I checked -- this was a proud capitalist country. Founded on the principles of the great Adam Smith. We are all about making money -- not nursing a bunch of malingerers and malcontents.