Is this the first time you feel so ashamed of being a SEGA fan?
As for the rest, I really can't take what you are saying seriously 
Here is how the real story goes:
-Shenmue 3 KS campaign would've happened with or without SONY.
-SONY is still pondering how deeper they are willing to be involved in this, I can't blame them, the number of backers so far: 45,055 backers. That's nothing considering the hype and the huge media exposure the KS project got. In addition, this is an established IP...
-MS gaming division is getting budget cuts left and right, to assume that they would've funded the whole project is foolish at this point.
-You are a SEGA fan, you will always feel angry.