The way Microsoft and Skype missed their opportunity during the pandemic to maintain or even expand their lead in video conferencing, while allowing a complete unknown (outside of the corporate world, at least) like Zoom to become the dominant platform, should be studied in business schools. The term 'Skype' is so synonymous with video calling that, based on personal experience, it is still used in place of FaceTime…
Almost everything I do for work uses teams, so I can't say MS missed any boats. It's spectacular how pervasive teams is given how universally reviled it is. I'd personally switch back to slack in a heartbeat for instance.
I didn't understand all the hate until a few groups tried pushing the actual "teams" inside "Teams", and goddamn they are bad. They're an awkward and confusing mashup of chat rooms and forums, with conversations spread across different levels and constructs that each receive different levels of UI focus.