Capitalism bans the initiation of force from all human relationships. This means, of course, that things like murder, rape, and burglary are illegal, but it also means that the government's use of the initiation of force is banned. Under laissez faire capitalism, all the government alphabet agencies would be abolished. The alphabet agencies include the EPA, FDA, FAA, OHSA, SSA, FCC, IRS, among others. All these agencies, in one way or another, use the initiation of force against individuals and therefore stand in opposition to human life.
Collectivism is based on the altruist code of morality.
Altruism says that it is virtuous for the individual to sacrifice himself to others. Collectivism says the individual must sacrifice himself to the race, the nation, the poor, etc. Capitalism protects all individuals from being sacrificed to any group. Capitalism is the logically consistent outcome of Objectivist ideas in metaphysics, epistemology, and ethics. Capitalism, when put into practice consistently, leads to prosperity, benevolence, and harmony among men.