Note also that these numbers are from last June, and Sanders’s campaign has gathered much more enthusiasm and support since then. That suggests that voters’ willingness to vote for a socialist may have increased since Gallup last asked.
All roads leading away from private property, and thus capitalism, have a tendency of arriving at the same destination of totalitarianism rather than the dreamt workers’ paradises and technocratic utopias often suggested by the intellectuals of socialism. A lesson that was pretty well established by the end of the 20th century. But then again, who learns from history?
1890 - The Sherman Antitrust Act passes, with the aim of encouraging competition against large and powerful corporations.
While the problem is generally accepted across the political spectrum, ideology shades the view of the problem's causes and therefore its solutions. Political views mostly fall into two camps which might be called the socialist and capitalist critique. The socialist position is that broadly democratic government must regulate economic, or wealthy, interests in order to restrict monopoly. The capitalist position is that " natural monopolies " are rare, therefore governmental regulations generally abet established wealthy interests by restricting competition. 
Some countries incorporate both the private sector system of capitalism and the public sector enterprise of socialism to overcome the disadvantages of both systems. These countries are referred to as mixed economies. In these economies, the government intervenes to prevent any individual or company from having monopolistic stance and undue concentration of economic power. Resources in this system are owned by both state and individuals.
In 1920, locked up in a federal prison in Atlanta, Debs made his last run for president, winning nearly a million votes.