This study looks at a competitive market model called Cournot oligopoly. The researchers found that in this model, the market isn't really competitive, and prices are higher than they would be in a monopoly. They also discovered that when new companies enter the market, the equilibrium where everyone kind of balances out is stable. They figured out that when sellers adjust how much they produce based on how much money they're making, things stay nice and balanced. One interesting result they found is that as more and more companies join the market, eventually it starts looking more like a perfectly competitive market, and the prices start resembling those of a monopoly again.