I don't think so. "Process" addictions (videogames, sex, dangerous activities, etc.) have seemed to me to quite different than substance addictions, and I've met quite a number of people with each (or both).
I am not very addictable to substances, but I go for a lot of the process addictions as if they were substances to another person. Obviously, I have had (and very occasionally still have) my issues with pornography, but I also had to give my boss my copy of Warcraft III recently and tell him "give this back to me when we're done with this project", because after buying it after a 2-year hiatus, all I did when I got it was play it for three days in a row. This is the kind of thing you usually more often hear about in AA meetings - i.e. "I was dry for ten years, had a drink, and the next day I was in a hospital".
I mean, both can be destructive, but you can't kill yourself from an OD on games OR porn. I suppose the Korean internet cafe guys who've killed themselves from dehydration might be a counterexample, but I think there are some big differences there.