this is exactly what hard parenting is all about. I do “as long as you under my roof…” bit (6 more years to go…) :)

I think the problem is that parents don't know that it's bad so they don't limit but this CEO apparently knows! Many parents are addicts themselves

honest question - do you really think that (most) parents do not know that it is bad?! This “CEO” stuff is not new, Steve Jobs famously said the same thing about his own devices…