I logged about two months of continuous real-time on a popular video game called League of Legends. Thousands upon thousands of individual games -- on average 20-25 minutes, some a lot shorter, some a lot longer -- before I quit video games in 2012. It's actually embarrassing and difficult for me to talk about, partly because video games comprise no part of who I am now, and partly because of how extreme an example of indulgence it was. I bring it up to make the point that this is what constitutes a major, if not largest, investment of time on the part of young men.
I take video games to be a symptom here, not a cause. Removing video games won't make these people more educated, it won't make the generation beneath them stay in school.