Instead of just being argumentative with him (guys tend to zone out after a while of being bitched at), why not take a proactive stance and suggest things the two of you can do together? Show him what you mean.
Like, instead of coming home and being like, "Get off the Internet!" You could suggest something like, "Honey, why don't we cook a nice dinner together, enjoy a bottle of wine, and then take a bath together?" Or on weekends, suggest a day out together doing something you enjoy, like going to a museum or a concert, whatever. Try to actively plan in "couple time" into your lifestyle together, go out on "dates", and then when you both have free time, both persons can do what they want. That way you will still have time for yourself to do what you want, he can still play his games, but you will also have time shared together.
If he's unwilling to budge at all and go along with doing things together, well, then it's obvious where his priorities lie and you need to make a choice about what you're willing to give up to be together with him.