So, Gilead has a drug which when given twice a year effectively prevents 100% of all HIV infections. That's it, roll up your sleeve and get jabbed twice a year and never have to worry about AIDS. It is cheap to make, but instead of being credited as the company which ended AIDS globally, Gilead is looking to profit from it as much as possible. Humanity has the technical capability to end a horrible disease, and it won't because of capitalist reasons...
AIDS killed ~630k people last year.