BlockNet is a pretty cool project, but I'd like to see where it goes. I think there's a market for it but to say its going to kill other Exchanges seems a bit overestimated. I think China and USA could really use a DEX though, Waves DEX is coming a long but its far from use able for daytrading.
But yeah, pricewise and marketcap it has a long way to go, could become a top5 project (gtfo BTG)