Re: "boost competition and innovation"
If there is one thing NVidia is known for, it is for burning bridges and stifling competition. There is a reason why NVidia was forced to use Samsung instead of TSMC for their current video cards. There is a reason why Apple refuses to use NVidia anymore. Remember when NVidia blacklisted Hardware Unboxed? Remember the Geforce Partner Program?
NVidia has a history of trying to restrict competition and hoard innovation. A leopard can't change its spots, and NVidia can't change who it is. An ARM-NVidia merger will be bad all around for everyone.