That's the problem with every-man-for-himself individualism. If people are doing well, it's treated as a success of individualism. If people are doing poorly, is it a failure of individualism? Of course not! It's due to a betrayal of individualism, so we must hunt down and punish the betrayers. It's the exact same thing we used to see on the extreme-collectivist side. Every real-world success was a success for collectivism, and every real-world failure was a betrayal of collectivism. Rand/Trump zealots have more in common with Lenin/Mao zealots than either would admit. Both refuse to accept that their ideology could have failures or weaknesses. They're both unrealistic, though frankly the shadowy conspiracies required to betray individualism are even less realistic than the lone bad actors required to betray collectivism.
Back here in reality, a more practical kind of individualism can prevail. Whatever you do by yourself, you do by yourself. As soon as you start aggregating power with others, you will be required to do so in ways that do not become coercive mini-governments undermining the system itself. Relying on individuals to resist such aggregations of power doesn't work, and neither does the "gang warfare" model. The only model that kinda-sorta works is a democratically elected and accountable government to keep the autocratic mini-governments under control. It's the worst option except for all the others.
Back here in reality, a more practical kind of individualism can prevail. Whatever you do by yourself, you do by yourself. As soon as you start aggregating power with others, you will be required to do so in ways that do not become coercive mini-governments undermining the system itself. Relying on individuals to resist such aggregations of power doesn't work, and neither does the "gang warfare" model. The only model that kinda-sorta works is a democratically elected and accountable government to keep the autocratic mini-governments under control. It's the worst option except for all the others.