I find it strange there's so many different material design implementations (for the web, no idea how it's going on in android), shoudn't at least the CSS be centralized to avoid uneccesary efforts and then provide specialized packages for things like bootstrap, jQuery UI themes, angular, react etc that all use the same base CSS? I know it's probably utopic but it looks like there's a lot of "wasted" energy in these…
If Google released their own, then presumably these would mostly disappear. I guess Google's focus right now is on Android, although elements of Material design are appearing on things like Google Docs, so they'd think they'd release that publicly, just as Twitter did with Bootstrap.
Google has released this, for those brave enough to use web components.