They're in a lawsuit with slack about monopoly. They can't sell it bundled with 365 in the EU anymore, and they appear to be planning to separate it Globally. That's the most generous reading, but Microsoft forces annoying changes all the time, so it may just be Microsoft being Microsoft. Also new teams installs very differently than teams, especially if using virtual desktops with either nonpersistent machines and/or using FSLogix, which is irritating from a support perspective. Imagine having to reinstall teams every time you reboot (there are ways around it, but we had to track them down unexpectedly and our client wasn't happy).