Oculus has exclusives because they partner with developers, offering money and support. Vive has exclusives because there's stuff you can do with the Vive's native VR controllers that you simply can't with the Rift's Xbox One controller.
When Oculus releases its Touch controllers (hopefully before the end of the year?) you might see Vive titles ported over to Rift. Movement in the other direction depends on what terms and conditions are in the contracts studios agreed to sign.
When Oculus releases its Touch controllers (hopefully before the end of the year?) you might see Vive titles ported over to Rift. Movement in the other direction depends on what terms and conditions are in the contracts studios agreed to sign.