I have a similar mental model, but Teams the way we use it is more of a replacement of Slack than Zoom. It's a huge app in terms of features, and it covers both segments, so it's not really a clean divide there.
It's also a very powerful "office OS" type of platform. Nobody else comes near in that dimension AFAIK. Agreed that it's not a designer's wet dream, but it does the job, albeit in a clunky way.
