Because vaccines are not good business for pharma companies (single dose, no return customers) but it is very good for society at large (and specifically for th

Because vaccines are not good business for pharma companies (single dose, no return customers) but it is very good for society at large (and specifically for the economy) So government, which represents the public good invest the money so this will happen. But free market fanatics like gates cannot allow any solution which "does not compute" from that (your) perspective.