But individualism turned out to be ok in that case. By the time vaccines were out, it had already mutated enough that it didn't make much of a difference whether or not people vaccinated, and most people ended up getting some variant of it. The bickering stopped, and US ended lockdowns around the same time as other countries.

If we were less lucky and it turned out to be super deadly and only solvable with more cooperation, that would fall apart here.