Cannibalize what EXACLTY? Read Dead, Anthem aren’t on Switch
First, this would make 3rd party devs in part complacent to port games into the Switch. "Just get it on the XBox and play it there. Second, Nintendo games would have to compete with the Game Pass games, reducing their profits. Third, Nintendo platforms would move less software overall, losing a chunk of their revenue.
You know it deserves the GOTY.