It seems surprising to assert that Nvidia would slash R&D after the acquisition, considering Nvidia’s demonstrated willingness to spend enormous amounts of money on R&D, even for speculative and risky products. For example, they funded the Project Denver/Carmel team for almost a decade, even though the resulting microarchitectures didn’t seem to have gained significant commercial traction.

If this was a sale to a PE firm I think your predictions would be more likely, but Nvidia seems really unlikely to be a “slash costs and sell it for parts” type of buyer.