Back in the 1990s, someone at Best Buy told me that CDs were on the way out and the future was the Sony minidisk. Best Buy was even devoting floor space to them. It didn't happen. If you had something like the I-pod where you could store 10,000 television episodes, that would be a space saving alternative that would really appeal to a lot of people. A lot of older tvshows are already being marketed in smaller boxes (remember how Dr. Quinn was originally put out in a box set with 1 standard DVD case per disk)? Like the minidisk, blu ray doesn't offer enough of an advantage on space considerations alone to convince people to switch.