> But, wages haven't improved in the last 40 years for the average person

...in the US.

Growing inequality in the US is driven by the fact that capital gains domestically have improved dramatically alongside wage gains abroad, while wage has been essentially stagnant within the US due to globalization / offshoring / outsourcing

The solution, in my humble immigrant opinion, is to train Americans to take on service jobs that cannot be easily automated / performed by cheap labor overseas. But that requires taking an honest look at the country's education system and neither side of the aisle seems to be able to do that without resorting to anger and vitriol