FYI, as a Microsoftie, (so I really have no horse in the teams v skype/lync debate) I find teams to be FAR better than skype. I'm on a half-remote team, and when we have to interface with groups that preferr skype, it always seems more frictional; I even was joking to my peers today that in teams we are more prompt+get through+done with meetings even faster than our in-person versions. It has rough edges that I trust engs are looking into, but I raise an eyebrow at the assertion that skype does it better, outside of integration scenarios which are rapidly improving. (And I used to use skype as the primary method of communication between my breakdancing crew a decade or so back, and used slack more recently for another job, I simply don't see Teams being as far behind as you imply.)

Similarly, I personally find the bundling->anticompetitive argument very unconvincing, especially given G-suite and other players in the cloud office space, especially in this context as atlassian's business model "rhymes" pretty heavily.

(As always disclaimer all opinions are my own, etc etc)