That was my mistake, for some reason I had Europe's population in my head at 1.2 billion and I didn't bother to check before posting. The USA is 330 million the last time that I checked. My point remains the same, Europe has a multiple of the US's headcount and vaccines are sold to individuals, not GDPs. If the US is wildly more profitable, that is a single point of failure flaw in the system that needs to be addressed for everyone's benefit.