Thus, a metamorphosis in stereo entertainment has transpired. They're still around, but continually decreasing in size while increasing in clarity. That's similar to the changes in television technology. About 15 years ago, the first front-projection big screens came out with horrible definition and a high price tag. Today, size doesn't matter.
Technology continues to advance.
Intelligent remote controls already replace a series of individual hand units. The discs themselves will decrease in size as blue, or violet, lasers triple to quintuple the amount of available information. But it's not that far away. Homeowners can turn their rooms into a home theater when they want it and hide the components when they don't. Drop screens, controlled lighting and curtains do wonders on that front.