"In a free enterprise system, do justice and virtue win or lose?" They win. Voluntary exchange, absence of coercion, gives justice to people. The only coercion that must be maintained, is to over-penalize, over-bureaucratize, criminals like murderers, thieves, abductors, rapists, land grabbers,...
I posted the above comments in the fb group that I created and moderate, "Government and Taxes, Liberty and Responsibility". Anotherfriend, Andrew Sheldon, commented that markets per se are not moral or immoral, that moral agency lies with market 'participants', and how they conduct themselves.
Markets by definition imply competition, not monopolization. When government comes in, it often creates monopoly privilege to certain sectors, like the tricycle drivers and operators, and deprive the ordinary passengers freedom of choice to take air-con vans or jeepneys.
When there are no formal rules respecting competition, some bullies can terrorize all potential competitors and declare a monopoly or cartel in a given area. So the premise of "Are markets moral?" question should refer to a contestable market, not a rigged or terrorized, government-sponsored monopolized market.
So the theme, "Are (contestable) markets moral?", a Yes answer is consistent with natural laws. People can do anything they want, sell and produce anything, buy and consume anything -- so long as they do not steal, they do not harm and kill, other people.
All monopolies and oligopolies in the country are created by the government. Initially via (a) Constitutional restriction to foreign competition, then directly via (b) legislative franchising. Then (c) other national agencies also create monopolies, like LTFRB create route monopoly for jeepneys only, aircon vans, buses are not allowed. Then (d) city or municipal governments can create monopolies for certain malls or supermarkets or gasoline stations. The local politicians can refuse giving a business permit to a new and competing mall or gas station, if there is an existing mall or gasoline station that is owned bythe family or close friends of the Mayor or some influential Councillors.
Market Failure vs. Government Failure, June 07, 2006
Limits to Free Market?, November 16, 2007
Pol. Ideology 10: Joe Stiglitz and the Market, December 16, 2008
Pol. Ideology 27: Why do Many Intellectuals Oppose Capitalism?, March 01, 2012
Inequality 16: Inclusive Growth and Central Planning, October 21, 2013
The Pope and Capitalism, December 03, 2013