I don't think anyone is conspiring against people who go to bed late - as an early waker I've often had noisy neighbors playing loud music late at night to contend with. Sometimes it was a larger event like a wedding reception, so calling the police wasn't exactly an option either (not that I'd ever done that).

I would say the world simply agrees that things - whether schools, shifts or parties - should generally start sometime, and thus, by necessity, be less accommodating to some people than to others.