Look at countries like Mexico ---- 10% of those people are doing very very well ---exceedingly well in fact. But they have a third world country where 80% of the people live in poverty. The other 10% are doing so-so. We had a country where almost everyone was doing quite well --- that was what the Founding Fathers wanted.
Although it seems economists wearing free-trade rose colored glasses would look at this and say that the average standard of living, GDP, etc. in Mexico is rising, and therefore free trade must be a success.