Have you been to the rust belt? The financial elite are doing great, yes. The middle and working class? Not so much.
I grew up in the rust belt on my dad's farm (which he rented). And then I did what the majority of people leaving the middle class have done, I moved to the upper middle class. A combination of public school funding, supportive parents, publically funded colleges, and federally backed student loans made it possible for someone who even screwed up enough to drop out of college his first time (very immature) to move up in stature in society. And far from this being a rare success story, it is what has happened to two thirds of the people who are moving out of the middle class.
What is true is that the gap between the upper classes of society and the lower classes is widening. This is a product of many factors, but mostly because the economy is doing so well and those with more resources and/or more capability are better able to take advantage of that opportunity. The widening gap at its root can be summed up with the old saying "it takes money to make money". While obviously not entirely true, overall it explains most of our country's problem with the left-behind working class.
The only thing we know nearly for certain is that the working class success stories of the last century are a thing of the past. When manufacturing and other low skill industries come back to the US, it will be because automation has reached a level where few unskilled labor is required. The working class will not be able to provide their children the same opportunity I can provide mine. That is why I made the switch to a more progressive view in my late 20's. We can still have a similar level of opportunity, but it will come from income redistribution.
Taxes and public aid, like my federally backed student loans, are how we can fix this imbalance. It won't come from bringing high paying rust belt jobs back to this country. That part of human history is over. We just need to find a way to fight against demagogues who prey on struggling citizens' broken pride and tell them what they want to hear. Especially when those leaders fight against the same progressive policies which could help them most.