[shoo]

This can happen in orgs that do project-oriented development pursuing business objectives. Maybe one team of devs madly tries to ship some new functionality to hit a deadline. If it is not possible for the organisation to get those teams to prioritise fixing the stuff they already shipped, maybe another team with different priorities gets created to do it.

This is probably a symptom of incentives not being structured appropriately, or orgs that only believe in the existence of projects, not the existence of products or systems that need to be maintained.