Also, when corporations have an inordinate amount of power, look behind the scenes and you will often see that power protected by governmnent.
Modern agribusiness is intertwined with government. It gets huge subsidies, it gets government to apply tariffs to restrict trade, and its the beneficiary of everything from price protection to protected trade routes to outright bans on competition. Look at dairy farmers, and how the large dairies are protected by laws that tax milk based on proximity to consumers. This has the effect of preventing small, local dairy farmers from competing with the large, more distant huge dairy farms.
Here in Canada we have agricultural boards that fix the price of commodities, and special freight tariffs and subsidies designed to control how agricultural goods flow around the country. Even tariffs between provinces or outright bans on selling goods between provinces. All enacted by governments who have been influenced by agricultural concerns.
Want to make the farm industry healthier? Lobby for an end to subsidies dairy laws, and other government intrusions in the market.
In fact, the problem of agribusiness demonstrates on of the major flaws of government regulation - “Regulatory capture”. What typically happens is that a problem crops up, and the people demand that government ‘fix things’. So the government implements laws to satisfy the people, and the people are satisfied and stop paying attention. But the industry being regulated hasn’t! Now that government has its fingers in their business, they hire lobbyists and lawyers and begin working to twist those regulations in their favor - to block new entries into the marketplace, punish competitors, or even to take advantage of the public. This is not a rare occurance - it happens in EVERY regulated industry. Often, the long-term effect of trying to regulate business is to simply make businesses partners with the government, giving them the same coercive power government has.
But whenever I bring this up with advocates of big government, they just wave the problem away as not worthy of consideration. It is a major issue.