Is this the reason why kinect is mandatory ?

[J_Allard]

VGKing said:

-It's a patent.
-Camera is optional.
-Internet is optional.
Need I say more?

Yeah no duh it's a patent, my post you quoted even says "Sony patent". The rest of your post is irrelevant. Internet is optional on the Xbox One as well, which would make all this tin foil hattery null and void, if it weren't already, due to sheer common sense.