I don't agree that Rent Capture is the correct terminology, because Buffett isn't using political or social engineering (so to speak), in order to capture the m

I don't agree that Rent Capture is the correct terminology, because Buffett isn't using political or social engineering (so to speak), in order to capture the market. He is simply finding companies with very high switching barriers that have occurred naturally in the market. We usually associate "Rent Capture" with activities like limiting the amount of taxi licenses in a given city which helps incumbents but drives out competitors.