Like so:
I bought a PS4. So I'm invested in the PS brand.
I don't have an Xbox One. Therefore, I'm not invested in that brand.
People thinking they need to buy a PS4 to play the Crash remakes is better for me, because that means more money for the brand I'm invested in, and thus more/better services that brand can offer to me.
Crash remakes being available on XB1/Switch (competitors) would mean less money for the brand I'm invested in, and more for the brands that I'm not. Not sure why I'd want that for these particular games.
Financially, some games are better off as exclusives. Gears being kept exclusive to 360 when going multi platform was an option is a good example of this.
Basic economics really, but uh, I guess "fanboy" is easier for children to grasp