Nouman Ali Khan argues that the Quran primarily targeted economic corruption and the greed of the elite, drawing parallels between pre-Islamic Mecca and modern wealth inequality. He explains how extreme wealth concentration destroys the middle class and fuels societal evils like crime and addiction, which Islamic laws aim to prevent. The speaker emphasizes that Islamic principles, such as inheritance laws, are designed to distribute wealth and prevent generational hoarding. He concludes by urging listeners to recognize their own personal greed as a microcosm of this broader systemic issue.