For comparison, in Canada's healthcare system drugs are bought in monolithic purchases by the government health board. While you can sell pills at $1000 a pop to patients who face serious illness without them, I can guarantee you that Gilead is not going to be able to sell their pills for $1000 a pop to a government agency. Canadians are going to be paying a lot less for these. Why would Gilead agree to selling their pills at a cut-rate in other nations? The market there won't support it, and being locked out of an entire nation's market is bad for business.