Sometimes they pay other companies not to make the unpatented drug: https://www.ftc.gov/news-events/media-resources/mergers-competition/pay-delay https://www.ft

Sometimes they pay other companies not to make the unpatented drug: https://www.ftc.gov/news-events/media-resources/mergers-competition/pay-delay https://www.ftc.gov/news-events/media-resources/mergers-comp... More tricks here: https://hbr.org/2017/04/how-pharma-companies-game-the-system-to-keep-drugs-expensive https://hbr.org/2017/04/how-pharma-companies-game-the-system...