That’s ridiculous. The destruction of the middle class ( where middle is defined as non-serfs and nonoligarchs) is an extremely serious issue for the US because of the government policies the country has pursued over the last 30 years: tax policy, workers rights, etc.
But, Finland, Sweden, Switzerland, and other countries have shown you can build a pretty successful country and living standard that doesn’t have such extremes of wealth inequality. And that’s been with far less private capital, a less culture of risk taking and innovation, etc.
A US that can blend our unique strengths with a clear focus on not letting wealth inequality get out of hand would make us unstoppable as a competitive power. Unfortunately, wealth inequality trends are hurtling us towards a total implosion and losing our advantages to such screwed up countries as China, India, etc.
Hell, we aren’t even practicing our core values anymore in government policy, ie the importance of education, ensuring a fair opportunity for all, honesty and integrity in actions, etc.