[nickik]

A common argument against AnCapism is the idea that monopoly will form and eventually there is a sort of superstate.

This is of course a old marxist argument, capital is inherently centralising.

There are however good reason to believe this is not true. In fact, most economist don't follow this line of thinking anymore.

No AnCap would deny that there would be some larger then healthy cooperations but its an acceptable problem that is pretty hard to solve for any system and is often made worse by state based systems.