Agree to disagree, I guess. Live sports is DVR-proof. It's why, year-after-year, the bidding war for various sporting events vastly outpaces the nation's average inflation. Sure, SOME content is available via a number of means, but there's plenty that isn't as well.
I use DVR functionality for virtually everything that isn't sports or "background music"... I have Netflix, HBO Go, and Amazon Prime. And I'm a looooong way away from being an Old Fart. So I get it. But some content will NEVER make that transition away from *live*. People love to talk about *cutting the cord*, but if it really was so popular/simple, HBO wouldn't be so terrified to set out on their own with their app as an Internet service. The money is still in Cable/Satellite, and that ain't changing.
Just because WMC hasn't caught fire (yet) doesn't prove its not a great product/idea. Whole-house DVR is all the rage right now, Content-on-the-go is hot-and-in-demand, and an increasingly-popular trend is multiple-screens in one room. All things that CableCard/WMC is well-equipped to deliver.
Sure, it may never break out. It may remain a niche and die. But none of that changes the fact that Win8 won't be Microsoft's Saving Grace if it isn't able to either provide new/unique functionality (WMC or other) or under cut its competitors on price. And as of today, Win8 appears to do neither...