There are patented drugs, specialty drugs and generic drugs in the United States, and patented drugs are not mentioned. Basically, it is a franchise, and it does not involve price reduction. Special drugs are basically aimed at special diseases, with small sales volume and unworthy competition; The last drug is mostly produced by the original pharmaceutical factory, and recently it has also been produced by foreign manufacturers approved by the US FDA (mostly profitable varieties). Although there is still competition because of the high entry threshold, they are fighting for who will pass the FDA's approval first and who will occupy the market first.
Most of our drugs are large-scale drugs with expired patents. In addition, in the past few years, the domestic entry threshold was low, there were many pharmaceutical factories, and the drugs with low technical content had competitive conditions. On the contrary, some high-tech biopharmaceuticals are not easy to die at reduced prices.
Not necessarily comprehensive, I hope it helps.