As far as I know most people use Skype for business calls. Maybe "team communication" was something that can be done with Skype, but I don't really think it's their core focus.
I think what them not buying Slack is implying is that they will start to try and actually compete with Slack directly. Instead of just internet telephony.
I think what them not buying Slack is implying is that they will start to try and actually compete with Slack directly. Instead of just internet telephony.