A better question is: why is this something that needs to be cured? Why cater society's schedule to people who wake up at "too fucking early" O'clock, instead of either A) having flexible hours for jobs that support it (There's no reason why my office needs to have everyone work the same 8 hours), or B) a middle ground that doesn't involve grating against the preferred sleep schedule of a significant portion of the population.

Somehow we let society moralize "the early risers are Gods chosen people" and the rest of us just need to put up with it.