That's the classical plight of someone who's much smarter than those around them. It's not enough to see the right path, you'd also have to manage to convince everyone else that it's right. Technology moves by peak knowledge and insight, not the democratic average.

... to the extent and up until it helps get the product off the ground. Beyond that, the primary benefit is PR - "oh, that's the gaming hardware made by Carmack himself, so it must be good".