The initial comment was quite snarky too, implying that there cannot be any competition in a duopoly. If anything, duopolies have some of the strongest competit

The initial comment was quite snarky too, implying that there cannot be any competition in a duopoly. If anything, duopolies have some of the strongest competition compared to a situation where there's only one winner or one where all the 5-10 companies just stop competing because there's no way to win.