These talks need to fall through. This would be truly awful for Xbox and PC gamers, losing future GTA, Red Dead, Borderlands, Bioshock, NBA 2K, etc. releases.
Could be bad news for Sony fans as well, as this could set a bad precedent that would lead to Microsoft and Google (who is also trying to break into the gaming market) buying up other big 3rd party publishers like Bethesda, Ubisoft, EA, Activision, Square Enix, Capcom, etc. in order to try and compete against Sony. 3rd party multiplats could disappear almost entirely if this happens. We need to be moving toward a future with less exclusives honestly, not more exclusives.
I'll say the same thing I said after Microsoft acquired Ninja Theory — as long as the games don't suffer (and they won't, being exclusives), I'm all for it.