Game adverts - not gameplay footage

[Guest2]

Practically every game advert states "not gameplay footage" or something on those lines. Why don't companies release adverts for games that show "actual gameplay footage" - games such as Crysis 3, Witcher 3 and GTAV would look fantastic showing clips of the proper gameplay.

 

[Guest2]

P Cars states "actual and non actual footage captured from PC gameplay" ...then shows xbox and ps4 game boxes

 

[Guest2]

What is the "steam refunding service" mentioned above. I have quite a few games on steam i have bought, played once then never again due to it being rubbish