Also, an argument can be made that some of Microsoft's mess was being too hands off with Skype. A lot of Skype's own development woes were projects they started

Also, an argument can be made that some of Microsoft's mess was being too hands off with Skype. A lot of Skype's own development woes were projects they started back while owned by eBay and simply finished in time for Microsoft to get the blame. Also the whole "Skype for Business isn't Skype and doesn't share anything but the brand name" was a hands off decision that was dumb in retrospect.