As recently as Windows Weekly on the 16th with Chris Capossela, the question was posed about getting rid of Skype in favor of Teams. While this seems like the kind of thing a big tech company would do, does it really make practical sense?
Would it confuse consumers looking for a personal messaging/calling app to look for an app called Teams? It makes sense to me for Skype to be dedicated to individual conversations with anyone on the Skype platform, while Teams is for longer term groups.
Microsoft should align the Skype client and Teams client to be so similar that maintaining two apps is non-material. Personally it would make more sense for Microsoft to use Skype as a brand to compete more with Discord (consumer and freemium) and use Teams to compete with Slack/Zoom (business and organizations) but the two clients are the same tech but different branding.