Sure. Anarchism is an anti-state (with state broadly defined) anti-oppression construct, and some anarchists also define it as anti-hierarchy. Capitalism on the other hand is predicated at least on private property, and in modern form, enforceable credit and contracts. None of those things exist in the absence of a state or state-like entity with the power to enforce. So if you attempt to put something like anarchocapitalism into practice, you will either end up with anarchism with personal possessions and homes plus some kind of communal management of collective resources, or you will get capitalist style feudalism where rich people and entities enforce their preferred rules with private armed forces over those they have power over. In other words, anarchism, or hypercapitalism.
RE: Was Hitler left or right wing?