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.
I don't think you're seeing the whole picture if you think only about physical force.
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.
To wit, I live in a mid sized town in the Midwest - about 80 years ago a family started a business that was pretty successful and is on its third or fourth generation of ownership now — that’s all well and good but it’s insane how much of the town is owned or directed by them now. Do you want to buy a car, foreign or domestic? Host a convention? Rent a hotel room in the urban core? Put on a concert? How about go to the hospital or buy health insurance? Go to college? Send your kid to preschool? Build a commercial building?