Why are you comparing gaming to IT/mobile? It should be compared to other entertainment industries. It has already surpassed Hollywood in terms of revenue in the US ($17bil vs $9bil in 2011). Having a dominant product in the gaming industry begets a lot of influence.
Worldwide, The VG industry generates around $70 billion in revenue (excluding mobile gaming). In comparison the movie industry - (all countries combined, not just hollywood releases) generates around 120 billion.
>Every gamer could as well only use an Xbox, and it still wouldn't matter much for the kind of discussion we're having about Microsoft.
Please explain what you mean..