Who are you talking about? Because the only entity that fits your use of "you" is the government, which is the only party with the power to disallow vertical in

Who are you talking about? Because the only entity that fits your use of "you" is the government, which is the only party with the power to disallow vertical integration, disallow monopolies, disallow mergers and acquisitions, etc. And if you're blaming individuals: probably a good idea to reconsider whether victim blaming is the right way to go about things, since no one, not even "the voters as a whole", have the power to make the government do things when the government is one of two parties, clearly neither of which is interested in curbing this behaviour.