But instead of stepping up to the plate and igniting a Red Queen's Race that would have benefited everyone, INTC first tried to discredit the technology repeatedly, then they built an absolutely dreadful series of decelerators that demonstrated how badly they didn't understand manycore. Eventually, they gave up, and now they're playing catch-up by buying companies that get within striking distance of NVDA rather than building really cool technology from within.
Now if someone threw a large pile of money at AMD again, things could get really interesting IMO. But the piles of stupid money seem biased towards throwing ~$5M per layer at the pets.com of AI companies these days.