Back in the 90s, my brothers and I had our screen time limited by egg timers. 30 minutes a day normally, 60 if our grades were good, 0 if our grades were poor.

Back in the 90s, my brothers and I had our screen time limited by egg timers. 30 minutes a day normally, 60 if our grades were good, 0 if our grades were poor. This was for games/TV, computer time spent on school work or other research was not included. This was not common at the time, most of my friends had unlimited screentime, a few of them had to abide by rules similar to mine. Also, the computer was a big thing in the middle of the living room, not something I could slip into my pocket. So auditing for rule compliance was a lot easier. And the three of us shared one computer for most of that time, so if anybody was cheating the timer and taking more time, the odds of being ratted out were pretty good. In retrospect I think the rules were worthwhile, because they kept me active outdoors. And because in college I got to see the damage video game addiction can do to some people. It's like alcohol in that most people can enjoy it fine but a substantial minority ruin their lives with it. Parents would be very careless to not place reasonable limits on how much alcohol their children drink each day.