Crony capitalism stymies mobility. Those who are already rich and powerful partner with their buddies in government and get even more rich and even more powerful. This is the system we have to a large extent right now.
I can tell you as one who spends a fair amount of time in Washington DC that times are good in and around the District. I’ve lived in the suburbs of the place for nearly 20 years (I can’t believe that I just wrote that) and I have never seen as many Teslas, Maseratis, Ferarris, and high end Mercedes Benzes driving down Constitution Avenue as I do now. The place isn’t littered with them, but they are pretty common. More common than in your home town it’s probably safe to say.
Unfortunately, the government isn’t helping answer the question.
The 21st Century has not been kind to many people in America as this infographic sadly and simply illustrates.