A few people have written about this. It isn't entirely hidden. Buffett explains it often in that he likes businesses that are situated in ways that they are very unlikely to face competition. You could say "not face disruption", but that is another way of saying "won't face competition forcing the company to either lower prices or improve product". He won't ever say, "I like to own monopolies" because he knows that a monopoly is technically illegal even if enforcement is weak these days. Matt Stoller has an email you can subscribe to. Had an email focused on Warren Buffet. Here is a quote:
For today’s post, I’m going to do an interview with Dayen on his new book, Monopolized. Monopolized is a mix between a business book and a travelogue, a set of stories about people living under the control of various powerful corporate entities, from Wall Street to Amazon to prison and the military. There’s also a roadmap for how to fight back, and Dayen profiles Israeli anti-monopolists who successfully did just that. One interesting aspect of Monopolized is that Warren Buffettis a silent presence throughout, profiting quietly in the background from virtually every monopoly Dayen describes. We don’t often hear of Buffett as a great monopolist, but that’s what he actually is. So in this interview, that’s who we focused on.
Your book is about monopolies. One character who keeps popping up in the book, surprisingly, is Warren Buffett. He’s a genial kindly old man in the media. But who is Warren Buffett in this book?
Buffett is the avatar of monopoly. This is a guy whose investments philosophy is literally that of a monopolist. I mean, he invented this sort of term, the economic “moat,” that if you build a moat around your business, then it's going to be successful. I mean, this is the language of building monopoly power. He not only looks for monopolies in the businesses he invests in, but he takes it to heart in the business that he's created, Berkshire Hathaway. Berkshire Hathaway owns something like 70 or 80 or 90 companies and they have large market shares in all sorts of areas of the economy.
It's kind of like an old school conglomerate from the sixties and seventies, but there are certain facets of it, where he's clearly trying to corner a market. Buffett's initial businesses that he actually outright purchased were newspapers. It started with the Buffalo News in Buffalo, New York. And he used anti-competitive practices to put the competition, his rival newspaper, out of business. That was literally his MO there.
If the only monopoly you can think of is Google's search, then you don't realize the world that you are living in. Or maybe you have a very technical belief about what a monopoly is and you think two companies in a market can't functionally create a monopoly-like situation by having an "understanding" not to undercut each other's prices. This happens all the time. The "understanding" doesn't have to written down or even verbalized. But there are many many industries where functionally there are only two or three suppliers. They reach an understanding and profit by that understanding. The buyer may even think they have a choice (or maybe they even have a choice: Coke or Pepsi), but the price the buyer pays is basically set outside of just market and competitive forces.
Large companies use their economic power to first put competitors out of business (or maybe just buy them) and second raise prices on their customers or cut the cost and quality of their product now that there is less competition. That is something that is happening in this world on a very regular basis and dramatically effects your life. As a society we've basically gotten comfortable with this situation and even think it is normal or inevitable. Then we wonder why inequality is dramatically increasing or why it is so expensive to get something large and of significance done.