It was also completely unreliable when a large chunk the user base switched to mobile messages won’t send, send out of order, would go into the limbo only to appear X days or even months later and if you were signed into multiple devices you were out of luck since if your desktop would’ve received a message while your mobile didn’t you would never see it on your mobile.
Skype died for many reasons MSFT not continuing with its botnet like network model as it’s a huge liability for them isn’t one of them.
I think it died with a certain crowd maybe.
Github at (least for now) serves a clear purpose. Microsoft has been positioning itself in the developer productivity space. Right now they have Linux (some) and Windows code productivity tools (vscode and all of the Visual Studio stuff), and end services (Azure/SQL Server/Windows) but no source control or code deployment tools that anyone can speak to (TFVC and VSTS are used, not widely popular, and aren't free to use). I bet Microsoft will start integrating more of their services to use Github Enterprise, build out CI/CD features (or offering them in an online "app" store) in Github, and then continue building out their free developer toolset.