And actually not just graphics but the world is moving towards these highly unified solutions in general, the hardware world is going "full stack" and companies

And actually not just graphics but the world is moving towards these highly unified solutions in general, the hardware world is going "full stack" and companies need to be able to offer top-to-bottom solutions that solve the whole problem without relying on someone else's silicon. Same reason NVIDIA wanted to buy ARM. Intel and NVIDIA are in trouble unless they can make that leap. Long-term it's the same reason AMD bought ATI too, that vision just took a long time to come to fruition. Remember, they "acquired" their way to success as well, RTG wasn't something that AMD indigeneously developed themselves either... just like AMD bought Xilinx and Intel bought Altera.