It's always seemed strange to me how the world agrees that it is fine to deprive someone of sleep if they happen to have a late sleep schedule (by e.g. starting school or work early).
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.
As someone who'd naturally stay up all night and sleep until noon, I've found that very tiny doses of melatonin (1 mg, preferably less) a few hours before bed work wonders to help me get proper sleep and stay on schedule with everyone else.
If they happen to have an early sleep schedule they would wake up early even if it's not mandatory, won't they? It's like the meaning of being a morning person that it just comes naturally
Most people have a fairly flexible chronotype, but not everyone. There are extremes at both ends. Don't assume that just because you can change your sleeping behavior that everyone has that privilege.
