That is an absolutely terrible argument, and incredibly false. The United States is not even remotely socialist, first off. In agreements like NAFTA, construction of oil pipelines, globalization in general, the country is still trying to appropriate or confiscate communal or indigenous land for the purpose of private investment and development. We are trying to destroy socialist nations like Cuba and China with embargoes and tariffs, even though they are some of the few Marxist-Leninist states left.
The United States economic policy has been shifting toward neoliberalism for half a century now, a literal return to free market "hands off" policy, rather than flirting with any socialistic course. Conservative and liberal leaders alike have been doing anything to appease the capitalists and produce a welcoming business climate. This has been done through attacking unions and their rights, austerity measures, a shift toward privatization of education and the biggest of them all: cutting corporate taxes.
These policies have still resulted in manufacturing jobs leaving the U.S. to exploit cheap labor overseas, greater gains for the wealthiest Americans and an indistinguishable lower and middle class. Wealth is trickling up, not trickling down as Reagan had forecasted.
What do you mean a capitalist nation does not allow for monopolies? That is exactly what capitalism produces. And seeing as you're espousing some libertarian manifesto, the folks at your think tanks are literally insisting the repeal of antitrust legislation and stopping the breakup of monopolies. It's part of the "free market" policy.
You seem to not know what socialism, fascism or capitalism are. Let me explain capitalism. Capitalism is a private mode of production and establishes an unequal society of property owners and non-property owners. The latter sell their labor to the former, and are in a constant struggle for economic freedom, which they are not afforded as a dispossessed class. Workers don't even own what they produce. Their employers do, and that is how the employers make their gains, at the expense of the working majority. To say we need more of this is ludicrous.
The Amish are not the only modern example. With 300,000 in Chiapas, Mexico, the EZLN have seized a number of territories that are autonomous, and they work in collectives, and provide through networks of mutual aid. They literally operate better than the Mexican government, and have greater healthcare.