It works in some countries with a low gini coefficient. In places like Germany or Spain people use public transport because everyone, broadly speaking, is in a

It works in some countries with a low gini coefficient. In places like Germany or Spain people use public transport because everyone, broadly speaking, is in a very similar socioeconomic status. In some other countries, the wealth inequality is much higher, and people with a higher economic standing don't want to share space with crackheads or mentally ill (a direct consequence of not having access to cheap or free mental health). Some societies are set up in a way that public transport can work, and others don't, it's just the way it is.