These are gaming GPUs being announced at a games conference to an audience of gamers and games journalists. The focus of Huang's talk was how accelerated ray tracing will improve the graphical fidelity of games.
GPU compute is a spin-off from gaming. Gamers remain the primary market. They generate the volume that allows Nvidia to sell a supercomputer on a card for under $1000. If you want a professional product, Nvidia are more than happy to sell you a Tesla or a Quadro at a professional price point.