A film called The 33 tells the story of 33 coal miners in Chile who were trapped inside a collapsed coal mine for more than two months. While trapped inside the mine, the miners agreed that if they ever got out alive, they would sell their story as a group, and that none of them would tell their stories individually. In essence, they formed a cartel, agreeing to sell just one big story for a lot of money rather than each miner selling his own individual story. As it turned out, they did get out alive and they did stick to their agreement. None of the miners sold his story individually. That is, the "cartel" formed by these trapped coal miners worked; nobody cheated. Explain why this cartel, unlike almost all others, was successful.