Honest question, can you provide a single example of a company that came to dominate an industry only to then go out of business purely because people chose to

Honest question, can you provide a single example of a company that came to dominate an industry only to then go out of business purely because people chose to stop buying and interacting with them? I honestly can't think of a single example of a monopoly, cartel, or industry leading company which has ever crumbled due to everyone collectively deciding not to do business with them. (without some sort of government regulation or technological advancement facilitating the change)