However, you can't tell me that Sony couldn't have made this thing work just as well with common media.
Sony reps have reportedly said publicly that the EX1 will eventually be certified to work with some standard-issue SSD memory cards, presumably for a limited subset of the camera's recording modes (i.e. no over/under cranking). Meanwhile, the Z7U works with standard CompactFlash memory which is getting quite affordable, and a growing number of video cameras work with SD memory cards. You still need somewhere to archive your footage until the memory cards get as cheap per hour as tape, but we're moving in the right direction.
The EX1 was obviously designed to compete with the Panasonic HVX200, and the Sony SxS memory costs ~1/3 per hour of recording capacity compared to P2.