Individualism is a dead end, the forces you describe are powerful because society is organized for their benefit. The cruel and psychopathic have avenues to make themselves useful to the ruling class. This is a social construct not an individual virtue or vice.

We can only make changes together. I def think people need to be more individually courageous, but the most common source for courage is social support, not some inherent trait. Some people are oppositional defiant in a way that can make them practical for a time, but without something larger steering circumstances then these individuals end up becoming tyrants all the same.