On windows it’s simple, every few weeks there’s a new pop up trying to nag you into using Edge. If you use Teams, it will default to links in Edge, then ignore your preferences after a few updates. If you’re using outlook, it defaults to Edge (system preference setting be damned), and again requires you to choose in the settings. Then an update comes along and blows out that preference.
It’s fun living in the dual world of seeing the teeth gnashing over Apple’s anticompetitive actions here, while at work being beaten over the heady by Microsoft’s daily 🤷♂️