In the 90s, my relatives first came to the US. In those days, there were newspaper dispensing machines on the sidewalk, which worked like this:
1. It was a box on the sidewalk with a locked swing-out door facing forward.
2. You put coins into the machine and the door unlocks.
3. Inside are all the newspapers. You put your hand in and take only one.
4. You close the door and it locks.
The first thing my relatives asked after seeing this was "why do you only take one?"
If you model society as a Nash equilibrium, the impulse to veer towards social betrayal is present in all people and societies. It's an obvious instinct and the fact that people are so open about indulging it only indicates that we're returning to the historic mean for humans, that the trust required to have a society based on mutual cooperation is vanishing. The only galling thing here is that the people to whom the most social benefits flow -- software engineers, product managers, executives -- are so brazen about betraying it, or cheering the betrayal of others.
I don't know where you emigrated to, but unless it's Saudi Arabia or Singapore, I would doubt your observation. Americans and Euros have a tendency to view everyone else as Rousseau's "noble savage", i.e. a romanticized alien.