Re: Check again in September
"Who doesn't, if even only occasionally, play Solitaire?"
I certainly don't.
So how are the happy upgraders going to react when they discover that they have to visit the Windows Store and download and install it?
Win8 updaters won't feel a thing since Solitaire wasn't included in it either.
The rest will either download the real thing from Microsoft Store, or they'll download an alternative free solitaire game from the store or from the web.
Earlier Windows versions have had games that weren't ported to later versions - Reversi, Pinball, Minesweeper - and while people like you lamented their disappearance, they either moved on, or the more savvy people either installed another game.
Then there is the add-on DVD player, free for now, and $14.95 later, and even if the PC has a Blue Ray drive, the DVD player will only play standard DVDs.
I'd recommend downloading VLC or MPC-HC or something similar. Even for Windows 7.
Windows 7/8 Media Player didn't have Blu-Ray playback either so there's no loss in that regard.
AFAIK, DVD and Blu-Ray playback (along with possible Dolby licenses etc) require a license that cost something >$0. The Blu-Ray would also require consistent DRM updates which needs labor. The DVD add-on is unlikely to be a goldmine for MS, instead the $15 (from probably a very small portion of the whole userbase) is there to cover all labor, licensing and so forth.