SACD and DVD-A obviously didn't catch on and take over. It still has a small slot in record stores. And it isn't new anymore. A lot of audiophiles predicted it was going to take the world by storm - It didn't. They were wrong.
I think the reason they were wrong was that there is a small percentage of people that appreciate quality music. So, where is the compelling event for the general public to get into "hi-rez". Not only that but a lack of a marketing push pretty much sealed its fate.
That being said I don't think it will go away any time soon, and as mentioned above, it will fill a niche for audiophiles for years to come.
I prefer LPs. Hi-rez sounds better than CD but not as good as LPs. Theres really no disputing that (although some foolish people will try). LPs cover the best sound (if properly recorded of course), and CDs cover just about all recorded music available. And I'm not about to add another format and software two formats are enough for me.
Rob