Today I saw an article about this in a Finnish newspaper as well, and the article went on to make a claim that "According to WHO games can be as addicting as drugs.".
Naturally WHO didn't make any such claim, that was just an invention by the stupid journalist writing the article. Considering that almost all kids and teens play video games but later in their lives might completely drop them because of other activities (like chasing girls/boys/dogs/rubber ducks, or work, studies, other hobbies...) or at least severely restrict them, they seem quite mild drugs in that case.
If all teens were using heroine and crystal meth, would we expect most of them drop the use later in the life just because they become jaded or bored of drugs, similarly like people can become bored of gaming? For instance, currently I am playing quite a bit less than a few months ago, simply because I have less free time. My gaming is now mostly restricted to weekends and sometimes not even that, depending if we go somewhere on weekends. On weekdays, I nowadays already want to hit the sack around the time I'd usually start my gaming session, like 10 or 11pm.
I expect my gaming increase again when I have more free time.
Anyway as some said in the beginning, I guess the context here are the people who don't even want to do anything else and it affects everything in their life. Then again if you do have lots of free time and you enjoy gaming, why the heck not? I've always felt that when I finally retire, I will probably use lots of time for gaming, simply because I can. Unless I feel I am bored by games completely then, but then I don't know what else I am going to do when retired. Watch TV all day?