If he demonizes anything, it's the greed that unrestricted [and insufficiently regulated] capitalism allows to take over the political process.
Which he views as private enterprise. When he got out of college he basically lived perpetually on unemployment while he campaigned hard for the removal of all time limits on unemployment compensation. He was on unemployment for virtually the entire decade of the 70s, while he spent all his time writing and working on far-left politics and engaged in political endeavors as an active member of the Liberty Union Party (hard-core radical Socialist) instead of working and functioning as a member of society. He read Marx, Lenin and Trotsky, who were of course communists, and socialism is the pathway to communism. He threw himself into winning elections. Political office doesn’t require the same skill level as private enterprise. He gave speeches right out of the hippie commie pinko handbook - everything that is wrong is the fault of the rich.
Sanders has his spiffy 11-point plan that basically creates a number of promised "benefits" in which others will be sent the bill, most notably the so-called One Percent. He's already endorsed the 90 percent marginal tax rates as the ideal place to start with redoing the tax structure. And despite American leading the world in per-pupil spending, the only "acceptable" plan to a socialist like Sanders is to spend even more, and if that does not work, spend more again. He believes that as long as you throw money at a problem, if you throw enough at it, the problem will be fixed. Never mind the fact that the more money we've thrown at poverty since the 1960s has done nothing more than create more poverty, and the more money we've thrown at schools has created less educated students. Clearly, we haven't been throwing enough money at the problem.
Sanders' "plan" also depends heavily upon the government forcing up real production costs for businesses. Sanders seems to believe that if government makes the creation of goods to be more expensive, that will raise real standards of living for people who already are not wealthy.
Sanders advocates the expansion of services that would be "free" to Americans with, of course, the "One Percent" paying for everything. He claims that all of these new expenses would "stimulate" the American economy because, after all, someone will be forced to "spend money." The problem, of course, is there simply isn't enough of other people's money to do what he wants.
Socialists (like Sanders, you) believe that owners of capital over time receive increasing returns to capital while individual laborers, over that same period of time, receive diminishing returns to their labor. Simply put, that private ownership of capital and means of production in general create a situation in which, scientifically speaking, the "rich get richer, and the poor become poorer." This was the idea behind Marx's views on capital, and modern generations of liberal economists and politicians have taken it to new levels. But Bernie wants to take it further. When viewing this situation through the eyes of a Marxist, or even through a Keynesian, eventually the economy will implode unless government intervenes through more spending, and we see pretty much the same recommendation from Marx, Kennesians, and the far left: redistribute income and spend, spend, spend. This "doctrine" is self-evident in the eyes of the Left. It is without question, taken on faith.
In Sandersland, capital is useful only in the spending that occurs in building and maintaining it, and the interests in capital are contrary to the interests of labor. As for the production of goods themselves, in Sanders' little socialist world, goods automatically appear on the assembly lines and in even greater abundance if those assembly lines either are owned or at least heavily regulated by government. Furthermore, the quality of those goods is identical to or even superior anything produced by private enterprise. This despite the government being inept, incompetent, and grossly wasteful in everything they do.
Sanders claims his vision for the economy is "expansionary," but no economy model even devised can expand by having government force up real costs of factors of production and have the government nationalize anything of capital importance. That's Bernie Sanders. And it has been since his days with the Liberty Union Party.