What is outdated in Friedman's analysis is that the middle class is no longer the beneficiary of government programs. This in fact is the root cause of the Tea Party/Donald Trump phenomena. As the payoff goes to hold together the Democratic Party's coalition of large business cronies and client voting blocs, the payout will have to increase and the taxes received from the "rich" will have to be less.
And so the economic situation is really much more hopeless than Friedman says. And the political situation is much worse, as the discontent that is driving the Trumpening is a symptom of this dynamic which oppresses the middle class. That will get worse. If the establishment doesn't like Trump, just wait until Hillary dials this all up to 11.