Two economists agree that labor market discrimination against certain workers unfairly leads to lower wages for the disfavored group. Economist x argues that government intervention is most likely necessary to eliminate this unfair treatment, while economist y argues that the best solution to the unfair treatment is to let the market work to eliminate it on its own. Economist y is most likely to be correct when labor and product markets are highly competitive and the lower wages of the disfavored group result from: