Bingo. 'The community' ultimately does not own what's on the train. There is no communal interest in protecting the goods on the train; there may be an element

Bingo. 'The community' ultimately does not own what's on the train. There is no communal interest in protecting the goods on the train; there may be an element of self preservation ("If the train is robbed, I can't buy the goods later!"), but there is little sense of communal preservation in a society that promotes individualism. The same thing applies to the thieves- anti-collective behavior is inevitable in a society that does not meet the needs of every individual.