So what if this is true... Are people mad when only a very tiny fraction of the population can play in the NFL, NBA, or have their own late night talk shows? Why do people get bent out of shape regarding disparities in wealth when there are so many other disparities in life like looks, dunking ability, running ability, creative abilities, getting chicks/guys, you name it?
Assuming the 20% that own 80% (pareto principle) got theirs LEGITIMATELY and ETHICALLY, why give them grief?
Would doing anything else be IMMORAL because it violates the Law of Cause and Effect? ie., if I want a big mansion in Malibu (effect), I have to plan hard, work hard, take risks, constantly solve problems/innovate/network (cause)....