Acharya Prashant explains that the dairy industry is fundamentally driven by human greed and exploitation. He argues that even without direct evidence, one can deduce the cruelty involved because humans naturally seek to maximize profit from any resource. This leads to practices like artificial insemination and constant pregnancy to extract more milk from female mammals. He emphasizes that if mercy reduces productivity, a profit-driven person will always choose productivity over compassion, even during slaughter.