The doom loop begins when you get some of the wrong people on the bus who behave contrary to your company’s core values and degrade the culture. Some of these people then become powerful enough to install incentives that are misaligned with the core values. This reinforces the behavior of the wrong people and drives away the right people. The culture becomes increasingly dominated by the wrong people and increasingly inhospitable to the right people. More of the right people get off the bus, and the proportion of wrong people increases to a critical mass. And then one day, you wake up to the horrifying realization that the culture you’ve carefully cultivated has been destroyed.