portal 3

i know a lot of people talk about this but guys lets face the truth. their isn't going to be a portal 3 a half life 3 or a 3 of any kind out of valve. and you can just say "ooooo i will make hl3 and portal 3! well you can, but it wont have that feel that valve puts in their games. but one game company has made a portal game that has that valve feel to it. prism studios. they made portal story's Mel. so have i just graven up on valve or could prism studios make a portal 3.