You have missed the point by such a long way here.
GP is a way for businesses to centrally manage settings in Windows and other software. Some of the settings handled by GP can be set in the gui. Most require obscure undocumented registry entries.
The particular settings that are being talked about here have no corresponding setting within windows. The app promo is the thing that creates tiles on the start menu for any new user asking them to install candy crush.
The pro version of windows has always fully supported GP. This allowed businesses to use the pro OEM license of the windows that came with the PCs they purchased. Now Microsoft is turning Pro into a weird stripped down OS to try and force companies to purchase enterprise.
What they're going to find is that the centralised management provided by AD is the single most important feature of Windows in a business and there are going to be a lot of business who are already paying for server licenses and CALs to allow them to use AD that aren't going to fancy also paying for licenses for the OS.
Note that Enterprise Windows isn't a license you buy instead of Professional, you already have to have an OEM pro license on the computer so you have to buy Windows twice just so that your users aren't asked to download Candy Crush every time they log into a PC.