I was really interested in the article until I read: "I spent the last three years as Google’s Design Ethicist...". In the article he is focusing at the application level but the issue is at the form factor level.
One simple example: if you give to a child a Simon game app based on the original Simon game [1] he/she will probably end up switching to YouTube and watching stupid videos but if you give him/her the "limited" form factor version of the game the child will have more fun.