You’re misunderstanding that there is no reason to hold the oligopoly. If the profit margins are high and look to be high for the future, the winning move is 100% to break and boost production. It’s free mountains of cash.

The math is is a simple as, “why make a billion on a 500 mill investment when you can make 2 billion on 1.1 mill”? You’re suggesting they are both incompetent and not greedy, which can’t possibly be true of all of them.