Judging by what Adrian Chmielarz
has said in response to questions about whether or not
his game will be released on the XBone in future, it seems that that particular console isn't too friendly to indie devs, owing to Microsoft's "
parity clause". This clause has cost the platform quite a few titles so far, and it wouldn't surprise me if SOMA is one of them.
Sony seems to be grooming the shit out of indies like a rich uncle with a candy factory. Microsoft treats indie devs with the same cautious bemusement as that of Rolf Harris' lawyer.