https://techcrunch.com/2017/09/12/apple-streamlines-itunes-12-7-by-removing-the-app-store/

Apple has made a significant change to the latest version of iTunes for MacOS and Windows by removing the App Store. This serves two purposes. First, it means people need to use the completely redesigned App Store, which debuts later this month with the launch of iOS 11. Second, it returns iTunes to its original function as an entertainment app.

iTunes broke new ground when it was released in 2001, but over the years it became widely derided as an increasingly bloated, awful, sucky, bad and embarrassing piece of software that needed to be “nuked from orbit.”