[tonyedgecombe]

If Microsoft thought they could get away with a walled garden then they would do it in a flash.

[tapoxi]

They're trying that with Windows 10 S.

[candiodari]

Sort of.

https://docs.microsoft.com/en-us/windows/application-managem...

So it's similar to Google's Android, although with the caveat that it's much easier for companies to have sideloaded company apps.