They don't have to buy the patent, they can issue a compulsory licence for it https://en.wikipedia.org/wiki/Compulsory_license#United_States_2 https://en.wikipe

They don't have to buy the patent, they can issue a compulsory licence for it https://en.wikipedia.org/wiki/Compulsory_license#United_States_2 https://en.wikipedia.org/wiki/Compulsory_license#United_Stat...