Something that people already mentioned, but still. There is great Visual Studio for Windows and for cross-platform development there is Qt Creator. The latter also comes with a full-fledged development framework that allows you do GUI, threading, networking, databases: it is effectively what a standard library should be. It also really fast and has a slick interface allowing to do code navigation really fast. I don't have to tell you what I use for C++ development. So it will be very hard for them to compete with existing options.