Twitch already actively complies with publishers on this, and does things like blocking games before the street release date. If the publisher doesn't want the

Twitch already actively complies with publishers on this, and does things like blocking games before the street release date. If the publisher doesn't want their game on twitch it isn't there: but the reverse tends to happen (publishers pay people to stream their game, and for their game to be featured on the twitch sidebar).