Earlier quoted context omitted.
I'm a father of two and a startup founder. I like Detroit techno, and all relevant events _begin_ at 1 AM. The solution isn't a startup, the solution is techno parties that start at 9 PM.
maybe my lameness is showing, but why do people do this? even as a teenager I was usually running out of steam and thinking about bed at that time. is it for people who work late shifts or are there superhumans out there pregaming all night for a 1 AM show? or do they not even start partying until 10/11 PM?
For others, some of it might indeed be helped by later work schedules as well -- a lot of service industry jobs for instance are not 9-5 and are more later shifts. On the other hand I do remember some talking about how little sleep they'd be getting before going into work, so...
On the organization side, I guess some of the reasons for many raves starting so late is that historically they often were after hours style events, sometimes semi-improvised and unlicensed. There was no liquor license getting in the way of closing earlier, and there's enough people that do want to party all night that it makes sense to do so. (It's not just restricted to electronic dance, where it is allowed, there are standard bars that are open 24/7).
I just chalk it up to a side effect of getting older. Even doing the standard dance club scene hours (which here often is a 10PM-2AMish scene, last call is 3AM here) would throw me off these days. (And I'm not even a parent, which I imagine cements your schedule even more!)