In a similar analogy: Starting up your own ISP is cheap. So why don't more people start ISPs rather than being limited to a small selection of providers? Lobby

In a similar analogy: Starting up your own ISP is cheap. So why don't more people start ISPs rather than being limited to a small selection of providers? Lobbying, start-up costs and more can all be contributing factors. Something can be exceedingly cheap to manufacture, but then you gate others from manufacturing through other fashions. Or they just outright buy out your manufacturing capabilities for pennies, then turn around to sell the insulin at massive profits again.