The genius of the ruling class is that they have kept the dying middle class anesthetized with technology and the internet. iPhones anyone? YouTube? Hulu? It's a better drug than heroine to escape into. Speaking of heroine, you think this opioid epidemic is symptomatic of the decline of people's fortunes? I do.
Eventually the middle class will shrink enough, that it will destabilize the current system and bring about change. What do you think this whole thing with Trump was about? People want change. ANY change. So they decided to give Washington the middle finger and screwed themselves in the process.
Historically, the middle class has been the buffer between the upper class and the working poor. The middle class gives the lower class something to aspire to and hope for. Without a middle class there is no hope. And a people without hope are the most dangerous. Most revolutions throughout history have happened because the wealthy got too greedy and squeezed the under classses just a bit too far.
The question is what will be the "too far" for Americans? As long as they have food, a home, and Internet, I don't see people rousing out of their stupor.