The problem I think is the all-or-nothing aspect. So you trade off convenience for safety and it mostly works out but the worst case is worse than many people

The problem I think is the all-or-nothing aspect. So you trade off convenience for safety and it mostly works out but the worst case is worse than many people think it could be. Why, for example, can you as a parent not set an (even global) spending limit on in app purchases? Why can't you disable in-app purchases per app? I think the answer to those sorts of questions is pretty easy to come up with. Lot's of things could technically be done that would make it easier for parents to manage this stuff, but it's not going to happen without a push from somewhere because every barrier you put in place will reduce revenue somewhere.