How much profit do the naysayers think Microsoft is making selling consoles? If they include PC gamers in their install based and sell them Xbox One controllers, have them sign up to the Xbox live and join the Xbox communities. It's better for Microsoft.
To answer the OP question, Microsoft is Xbox and Windows 10, therefore all exclusive from now on will be Microsoft exclusive rather then Xbox Exclusive.
Do you even understand between Windows 10 exclusives vs coming to PC?