If you had every factory that ever closed and moved abroad back in the US, you'd raise the lower bar on income average but you wouldn't get closer to the 1% if you were already gainfully employed. There's a glass ceiling for people who don't pursue high income type careers. Skilled labor jobs like craftsmen and engineers typically will have their incomes capped so that the shareholders, owners, etc... will make enough to hang around in the 1% range. So if you want to be in the 1%, start a business. Tax laws that stifle small businesses also present road blocks getting to that 1% range.
However, move the opposite way: Close factories and move them abroad where lower emission standards, cheaper labor and almost zero oversight exists (and lower taxes), you get higher profits and richer 1%ers, and a wider gap between the classes. The middle class family loses ground while the wealthy business CEOs and large shareholders capitalize.
Seems to me that's why Trump won.