Uh, those are apps, not part of an O/S.
Right you are. . . they are apps. Traditionally they have included means of playing such games with the OS and a means of playing a DVD. . . how limited is this? What does MS have in mind? Are they going to be in competition with companies who will build apps to do the same thing utilizing MS's OS? If so, Microsoft will have an advantage because they will know the hidden hooks in the OS.
And they are apps that can easily be replaced by freeware that is out there - I eschew much of the built-in Microsoft app-line because I never know/trust if it is sending data I don't want sent - many of their apps "reset" some configurations whenever updated and you have to tell them not to do certain things again...and again.
If you stripped any modern OS of its included apps you'd have nothing left but the the NT/BSD/Linux kernel, and some system utilities.
That's a server OS, not a consumer OS.
Your statement, while true, became obsolete 25 years ago with regard to consumer OSes.