The app automatically installs Bing Visual Search and includes code to decrypt cookies saved in other browsers, Rivera said, and it also brings a “free” geolocation web API to the system.
The developer discovered “many” nasty tricks Microsoft integrated in Bing Wallpapers, which include trying to change the browser’s settings and set Edge as the default system browser. If the default browser isn’t Edge, the app will open the default browser after some time asking to enable the previously installed Microsoft Bing Search for Chrome extension.
Vertical would be if MS owned the carrier, the manufacturer, the operating system etc. Horizontal applies here where they own many interconnecting parts of the same layer of the market. Search, browser, email, etc, all being used to promote each other at the expense of competitors