“If that sentiment is correct, then it follows logically that America is no longer capable of self-government. If this is true, then what are the alternatives? Military dictatorship? Theocracy? The sundering of the Union?”
You hit at the nut of the problem. I believe that there ARE people who are still capable of self governance. The problem is primarily a locational one: those who are capable are spread over far too much territory to much matter from a national perspective. Some folks are trying to remedy that. See my tag line for an example.
Is there an outrage that could prompt you to support an amendment convention?