1. Bruce Springsteen has quite a back catalog, not only of songs diehard fans would know, but of huge hits. It's easy for him to do a three hour concert of his own material. Owl City and Justin Bieber have only a few hit songs, so unless they fill a concert with album tracks and/or covers, they simply don't have the material.
2. The market tells entertainment providers what is valuable and how to price it:
-- Consumers no longer buy recorded music -- approx 90% of all music today is downloaded illegally, so the money to be made in the industry comes from live tours and merchandise. Therefore, there is huge incentive to maximize profits by decreasing costs (and one way to do that is by decreasing the length of concerts).
--Consumers no longer consider actual singing ability to be important either in their recorded or live music, so many of today's most popular musical acts do not have the natural vocal ability or training to permit longer concerts. Even singers with actual singing ability have no background in live singing and/or vocal ability and are much more likely to blow out their voices.
--Consumers are willing to pay top dollar for 90 minute concerts, so there is no incentive to provide a longer show.