Not for long. There are a lot of similar drugs, some already on the market and others in the pipeline. Recent clinical trials have shown that Eli Lilly's Zepbound (tirzepatide) is superior to Novo Nordisk's Wegovy (semaglutide).
Novo Nordisk also makes cheaper insulin which probably keeps Eli Lilly in check in free markets.
Come to think of it, Airbus is a similar example of European competition with the US that keeps the unfettered capitalist competitor in check. Boeing stands to lose something if there is a competitor waiting to eat their market share. Of course, the US is a bit protectionist so free market rules don’t always apply there. But they do in many other parts of the world.
