I don’t think comparing the TV most people had in the 80’s and 90’s, and the games, to the Internet, modern MP games, and streaming “tv” is remotely fair. It might also be unwise when you consider those same decades saw an explosion of childhood obesity. A kid with an internet connection today has access to most of the world’s entertainment, either to purchase or pirate. We also weren’t able to be in 24/7 contact with each other, so boredom was very real. Even as an avid reader, I was limited by what books I owned, or were available at the library. Now there are no limits at all.
If you want to, you stay plugged in without coming close to exhausting novel entertainment, and never be bored. Maybe that will prove to be harmless, or maybe not. Maybe using a whole generation of people as lab rats for profit is unwise and unethical?