I know you guys are aware, but news of platform exclusivity breaks this fan's heart.
I invested in an HTC Vive not only because I believed it to be the best VR experience on the market, but because OpenVR and OSVR are open platforms.
Clearly this is a financial choice (I kind of wish sometimes that Double Fine was able to operate out of a basement instead of San Francisco and pay their developers peanuts -- no offense), but as someone who is also a Psychonauts fan who won't buy into the PSVR for financial reasons (as well as closed platform reasons), I am very concerned that I will be similarly cut off from the amazing creative output of Double Fine's future titles ultimately due to payments for platform rights.
Hopefully Double Fine will somehow find a way to communicate something to assuage the fears of fans like me. Right now it seems like a valid concern.