Yes, completely unregulated would lead to that. We need laws to protect against coercion and adjudicate in the case of disagreements between parties. Warring tribes where physical force wins is not a good place to be.
People who are well off have more opportunities to start other ventures that make them even more well-off, and if they're especially powerful, they can use that influence to further their benefit. I don't think that's particularly controversial.
Capital begets capital.