You do realize that in the United States, the top 1% holds 35% of the nation's wealth, correct? You also realize that there isn't an unlimited supply of money, correct? If there are a finite number of dollars, and 1% of the nation's population controls 35% of it, that leaves the other 65% to be divided by the other 99% of the population, correct? Are you also aware that the bottom 40% controls less than 1% of the wealth in the United States?
Short of just printing money and devaluing the currency as a result, there is little for poor people to do. They cannot get capital because they do not have credit. They cannot build credit because they do not have capital. Our economic system is a debt system. The poorer you are, the more debt you have that is a strike against you. The richer you are, the more debt you have is a credit in your favor. Being zero sum has nothing to do with the fact that the ability for the poor to create something of value that is given equity is next to nil.
So yes, I hear "it's not a zero sum game" all of the time, but it doesn't change that the system has made certain it is zero sum in every way except by name. It's like saying everyone has the right to vote for whomever they want, while only offering one choice as a legitimate candidate. Come now, anyone can vote. Why all of the complaining? Just because there's only one candidate doesn't change that we live in a democracy. Right?
Sources:
https://en.wikipedia.org/wiki/Wealth_inequality_in_the_United_States
https://www.statista.com/statistics/203961/wealth-distribution-for-the-us/
http://www.pewresearch.org/fact-tan...great-recession-by-race-ethnicity-and-income/