@Sieghardt I didn't even think of that angle. Sounded like a win to me aside from obviously whether normal Amazon discounts you'd get would carry over to purchasing a game this way. There will definitely be streamers who abuse this and favor games that can be sold over others when they stream for more revenue though, but hopefully over time the list of supported games will grow vastly until that's not really an issue at all.
I honestly don't see the harm of turning this kind of thing on and trying it as long as there's no drawbacks for the streamer, long as no EZA members goes out of their way to play a game on the list they otherwise wouldn't have touched for the sole sake of possible revenue gain. I don't think anyone at EZA would even do this, so it's probably fine. For once Twitch, I sorta like this idea of yours. Reminds me of a finder's fee or recommendation without sending an annoying thing to your friends they don't want to see. Obviously anyone attending the stream will at least be mildly interested in the game, and even if they're not all they have to do is not click the button to buy the game.
And let's face it, even if we don't want this, Damiani will accidentally turn it on one day to troll without realizing he can't turn it off anymore and we'll be stuck with it in some form regardless.