Imagine something like OnlyFans except instead of being accessible 24/7 for anyone to see at any time, it's only accessible at very late hours, possibly midnight to 4 AM, etc, in your time zone or whatever time zone you wish. In some cases, your content might only be available on certain days of the week.
A neat side effect of this is that if for instance you have a respectable job, but also want to do some debauchery online on the side, no one can simply go see your stuff without respecting the time zone. That means employers aren't going to be looking you up during business hours or your grandma isn't going to accidentally open up links in the middle of the day leading to your spicy content. Stalking someone online becomes a little more complicated because you now have to wait for their content to become accessible. And if someone does see your content, you know it's because they put in the effort to be there when it opens, which can be embarrassing for them to admit.
We take it for granted that information about someone is constantly available online once posted but I think the next big trends is going to be these sort of inaccessibility controls, that are not based on money.
Before you go trying to make this a business though, keep in mind a big player like OnlyFans can just make this a feature in a weekend, if they haven't already.