It seems to me we have fundamentally different ideas of what capitalism is. To me, capital is savings - immediate consumption forgone to create something which provides more in the future. I haven’t yet encountered an argument that isn’t reducible to a complaint against the way market mechanisms interact when the government is involved.
I agree about reducing the maximum wieldable power to the greatest extent possible. I think we just disagree about what this actually looks like. The problem is that any institution which would deign to be the authority on this matter is the very one where power coalesces. A system wherein no one single entity has the ultimate authority is the only one that won’t get worse on this over time. The participants should be governed by the incentives inherent in the system, not the dictates of one of the participants.
Anarcho-pacifism is a very respectable political position, btw. I think studying economics from the Austrian school would at least give you a better idea of where ancaps are actually coming from.