I agree that movies appeal to wider audiences. Its more normal, they will always be more normal, more status quo, therfore more popular
You just sit in a chair and watch the damn thing which has live action, real people acting. This makes it way easier for the average joe.
I don't care if videogames are more underground than movies or series through, for me they are and will always be better.
Since in my opinion the average normal joe is boring, thats the case, but at least he is comfortable where he is and I can respect that.
Edit: the thing is... why would you want videogames to win vs movies? so they become more generic than movies? so generic triple-A gets even more repetitive? The only positive thing I can see from videogames getting thaaaat much popular is the profit generated by the industry, but thats it, creativity and fun are worth more imho.