I find this very exciting.
WebGL is a very capable hardware rendering API.
Here's a ray-tracing demo that uses the text on the right to mathematically render shapes.
There are no polygons here, no resources other than a few textures, it's ALL ray-traced:
Animated Morph....
https://www.shadertoy.com/view/XdS3Wm
I am a little nervous of animated banners coming back though. Will we see web pages full of animated bars all vying for attention?