Because there is no collective social/class consciousness in America. It’s all zero-sum, win at all costs, second place is first loser. You can’t afford to care about the stranger but the idea of safety nets and socialist public policies is demonized constantly as either weakness or deliberate theft.
Everyone here would rather risk hurting themselves than helping someone else at their own expense.
Seriously? If you haven’t see the ending of the first season by now you don’t get to complain about spoilers.