Because unless you’re dropping $1500+ for a gaming rig, you can’t play them. If you have a gaming PC, it wouldn’t be a good deal for you. If you don’t have a gaming rig, but you have an Xbox, you could, with my idea, take advantage of Steam’s deeper sales and giveaways, and be able to play them on the Xbox.

If you buy a lot of games, you save a lot of money by buying from Steam/GOG, so it would be worth it. Especially for those of us who don’t have gaming rigs.