In spite of our individualism, most Americans
still stop at red lights and wait for--sometimes inordinately long--lengths of time for it to turn green before proceeding despite there being no cross traffic and no practical reason why they should. They do this even if they know there is no enforcement or traffic camera.
They do this because they are educated and have the value inculcated in them very early on that "red means stop and green means go." They also learn that behaving in compliance with this rule is critical for the orderly functioning of society. Interestingly, when people are out of their cars, suddenly their ideas about the iron law of traffic lights get way more loosey-goosey. Part of this is because they sense, deep down, that the traffic laws aren't designed with non-car road users in mind, so cyclists think it makes more sense to treat red lights as stop signs and pedestrians resent not being able to walk wherever and however they please.
But a bigger part of it is that all the social conditioning is based on driving and not on walking. So that deep-down sense of "This is wrong" that keeps people in line doesn't exist once they're out of their cars. This guidance even applies in the car for signage that isn't common. Stop signs and traffic lights are explained to you from when you're a child. But Yield signs and 4 way stops are not always and, consequently, you see a lot less compliance among drivers on this front.
In places like Japan, it's not some property of the "communitarian culture" that magically makes people more likely to pick up after themselves. It's drilled into them from childhood. Kids are expected to tidy up at home by themselves. It's a standard part of the pre-K and early childhood education to clean up your spaces regardless of who made the mess. And when the cleaning staff comes by to do the deep cleaning, the children are generally told to THANK THEM for their contributions rather than taking them for granted.
Culture isn't some exogenous force that falls out of the sky or is bred into our genes. It emerges as a consequence of how we socially condition ourselves, what we teach our kids, what we expect from each other, and what we are willing to put up with. To put up with shitty aspects of our own cultures rather than adapting or changing is a choice we make.