An alternative is those that stay are more “under the gun”, whether it be due to having dependents or still needing to make a reputation for themselves. It’s simply a bet that the product/service you are selling will still keep selling* in sufficient amounts.

The larger the organization or more monopoly/monopsony position it has, the more these kind of games can be played.

*if not for money, then sufficient political capital such that you can win the next election. Or maybe you have a goal other than winning the next election.