What was bad about john d rockerfeller?

John D. Rockefeller is often criticized for engaging in monopolistic business practices, such as forming the Standard Oil Company, which used predatory pricing and ruthless tactics to drive competitors out of business. His company's dominance in the oil industry was seen as detrimental to fair competition and consumer choice. Additionally, Rockefeller's wealth and influence were perceived as excessive and exploitative during a time when many workers faced poor conditions and low wages.