I don't understand the point of view with cost shaming, it's not like anyone is going to give Americans a rebate for money we don't use for ourselves. As a country we pay a LOT in taxes towards R&D for the vaccines and treatments throughout the world and we also pay great deal in premiums, why shouldn't these measures save American lives? Is it better that they end up as some fat cat's bonus or as dividends, for me that's a hard no across the board. I'm not sure how much American's pay in total for medical premiums and R&D I would imagine it's more than many countries churn in GDP, therefore I am 100% fine that these measures are distributed for Americans. I do not feel at all bad about taking it back.
(Not against other countries doing the same but somehow we always get shamed over it. Not OK.)