Addressing the argument about affordable housing, one might counter that market forces should dictate prices. Friedman (1979), an esteemed economist, argues in favor of the free market's self-regulation in determining prices, emphasizing its efficiency in allocation. While the concept of the market self-regulating seems logical, the reality reflects the market's inability to cater to lower-income groups, as pointed out by Williams (2018), an urban planner, who highlights the housing market's bias towards high-income individuals, neglecting the needs of the marginalized.explain main idea /claim