The point is, that we want to offer a steam for people who still would prefer to have a game on Steam, but want to buy it cheaper. But on the other hand, giving Steam key to someone who don't have Steam and will only play it no-steam is pointless.
I think the way it works now, only if someone requests a steam key they will get one, and not everyone, although I’m not 100% sure.
Even though it’s a personal opinion, I don’t think it’s a good idea to charge separately for 2 versions of your game.
I can either set the purchase to include the Steam key or not, it's not up to a user sadly.
