Eh, not for WebGL it won't. Nobody even implements DX other than high-powered desktop GPUs.
Will it live on? Sure, we will still have games and Xboxes. But if you're going to pick a standard that can work on mobile and desktop, there is no contender other than Vulkan.
Will it live on? Sure, we will still have games and Xboxes. But if you're going to pick a standard that can work on mobile and desktop, there is no contender other than Vulkan.