How is The Grapes of Wrath a criticism of capitalism?

"The Grapes of Wrath" critiques capitalism by highlighting the struggles of the Joad family and other migrant workers during the Great Depression, showcasing how the economic system prioritizes profit over human dignity and welfare. The novel illustrates the exploitation of labor, as large landowners and corporations prioritize their wealth, often at the expense of the impoverished. Additionally, it underscores the dehumanizing effects of industrialization and the social inequalities that arise when individuals are reduced to mere commodities in the relentless pursuit of economic gain. Through these themes, John Steinbeck advocates for social justice and solidarity among the disenfranchised.