I don’t think this is half as bad as some people think to be honest. They later said it’s for a single IP and there have been hints that Reach is not their last game for MS although most likely last Halo game and they are open to working with other publishers even though this new IP will be the main focus.
I know a lot of bad stuff happened with Infinity Ward but Bungie own’s the IP and control it, its a very different set up.
Also it will come to other platforms too.