I found that gaming addiction becomes self-reinforcing once you start putting a significant number of hours into gaming. Once you spend enough time gaming you'll end up not having enough hours to fulfill your real world commitments, like studying. Not fulfilling your real world commitments will cause you stress (failing a test) and you'll seek relief by going back to gaming. This can become a vicious cycle quickly as the more you game to relieve your stress, the more stress you end up creating for yourself by having even less time to fulfill your real world obligations.
The kids I knew who had the most unstable families were the ones who paid the highest price for their gaming addiction and ended up not graduating from high school. So I'm not surprised that unemployed young men who have unstable professional lives are getting hit hard by gaming addiction now. I hope they can break the cycle. I burned off a lot of hours playing Magic and I do sometimes wonder what could have come of that time if it had been spent elsewhere.