What ethical reasons would people have for not buying from a particular company?

People may choose not to buy from a particular company due to ethical concerns such as the company's labor practices, including exploitation of workers or poor working conditions. Environmental sustainability is another factor, where consumers may avoid companies that engage in harmful practices that damage the planet. Additionally, companies associated with unethical sourcing of materials or those that contribute to social injustices can also deter consumers motivated by ethical considerations. Lastly, a lack of transparency or accountability in a company's operations can lead to distrust and result in boycotts.