This leaves more bandwidth for all devices connected together via 1394. With 1394, there is plenty of bandwidth for several high-speed devices to work at the same time. It is conceivable that mid-speed peripherals may choose USB initially, but transition to 1394 in search of adequate bandwidth. One of the benefits of USB 2.0 should be increased bandwidth. USB suffers from over-marketing which has reduced its benefit to the end user.
Expectations are far above what USB can deliver today.
With USB being promoted for use in speakers, desktop cameras, mass storage, and printers, the end user might reasonably expect to be able to use two or three of these devices at the same time. USB proponents generally agree that USB peripherals are primarily intended to be used one at a time. There are even reports of bandwidth-related problems when playing audio and trying to use a low bandwidth device such as a mouse at the same time. With a faster version of USB, multiple devices could be used at the same time and the benefit of USB would be greatly increased. The USB bandwidth problem is just being repeated at a faster speed.