It is good to have this pointed out from a scientific perspective.
But now comes the tricky part - will this information be drowned in paid mock-studies stating otherwise, or water the case by casting doubt? Will there be actual protection of children and young adults from the legislative side, or is this again one of the cases where the money to be made is just too big and politicians too easily bought, to change anything and to prevent turbo capitalism when it becomes harmful to people?
Similarities to food regulations and sugar products come to mind.
I suspect the video gaming lobby is not as strong as other ones. Nonetheless, regulation (or discussion about it) comes very late to the party, where most of the big players (read: gaming companies, EA etc.) rely heavily on "gambling" mechanisms for their revenue. Thus, strong lobbyism from those companies will be there. Nonetheless, we already have legislation in Belgium, Netherlands and regulation right now (probably) coming to Germany (one of the chambers still has to vote for it). So, finally legislation is catching up with it. At least in Europe. I'm very happy about it. Simply make all those games playable only if you're 18 or older and we will see what happens (I can imagine a future where EA will release 2 versions of FIFA).