Microsoft acts like it’s lost all institutional knowledge of the Internet Explorer court case, which is pretty weird because I was twelve and the institution of me retains knowledge of it https://www.theverge.com/2023/5/3/23709297/microsoft-edge-force-outlook-teams-web-links-open
Microsoft is forcing Outlook and Teams to open links in Edge, and IT admins are angry

Microsoft is warning IT admins of upcoming changes to Outlook and Teams that will ignore default browser choice for links. The change has angered some IT admins, especially ones at small businesses.

The Verge
@0xabad1dea I suspect there's also some degree of calculation here -- Windows (and Outlook and Teams) is less dominant and antitrust regulators are less active than either was at the time of the last antitrust action.