While economists mount a convincing case that competitive markets lead to efficient outcomes, there is more ambiguity about the social & moral consequences of market activities. Indeed, there are concerns that markets tend to encourage immorality & reduce human dignity.
However, “free-market capitalism” is perhaps the best of all alternative systems that support & promote basic moral standards.
This is because markets encourage us to treat strangers as friends to support our own attempts to improve our own lives. In this sense, markets encourage social harmony & human cooperation that depend upon participants engaging in moral behavior.