Makes perfect sense.
Developers have played the hand to Sony if they need to recode a game and release it on a separate platform.
And if they need to recode anyway, it doesn't take a lot of effort to add in some animations or a "respray".
The core of the structure is there, adapting is easy compared to creation. Then it gives reason for a double purchase.
I'm sure Sony don't muscle them however, I expect it's more along the lines of "We get X royalties without exclusive content, and Y royalties if you do".
Developers have played the hand to Sony if they need to recode a game and release it on a separate platform.
And if they need to recode anyway, it doesn't take a lot of effort to add in some animations or a "respray".
The core of the structure is there, adapting is easy compared to creation. Then it gives reason for a double purchase.
I'm sure Sony don't muscle them however, I expect it's more along the lines of "We get X royalties without exclusive content, and Y royalties if you do".