Unfortunately my childhood gaming rules were rather strict... "Gaming only on weekends, only after homework, and only one for one hour"
That said though, I've spent a lot of time at my grandma's house playing on my cousin's Super Nintendo, away from my mom's judgemental sight, but even at home I found ways to break those rules constantly, and my mom knew, thankfully she got more lenient over time...
As for the whole "fighting over the TV with your siblings", even with the very limited play time, me and my sister fought over both the TV and the PC a lot, and those fights have only stopped once we got our own 'screens' if you will... I tried to compromise and play 2P games with her, but she preferred to play alone, and generally wasn't into the same games that I was... Our bickering only got punished when it went too far (or too loud) said punishments were often physical...
Thinking back now, it was quite miserable, I'm so glad that those times are over...