My comment wasn't meant to challenge what you were saying, just adding on my own rant, but I agree with you. I would add that the preferred arrangement for capitalists in our modern era is oligopoly, where they can coordinate (not fix) prices to fatten their profits and don't need to worry about one purchasing the other. There is definitely a kind of ruthless competition between large firms and smaller ones, but between the large firms, they seem to get along quite well.