Chrome is quickly becoming the new IE. Browser demos are now frequently written and tested for the quirks and behavior of a single browser. (and it's always Chrome)
This behavior people have been railing against for years is once again standard.
This behavior people have been railing against for years is once again standard.
In fact, this uses threejs[1] under the hood. It is just that the version of Firefox someone is using sucks in comparison to Chrome for the three.js stuff (likely WebGL).
Now, maybe there's a greater chance that the situation will change, and other suitable implementations will eventually arise. But until that happens, an open standard with one usable implementation really isn't different from a closed standard at all.
However, Khronos[1], the entity that makes opengl, also made the webgl standard. The fact that mozilla hasn't done as good of a job implementing it as google has doesn't magically negate the fact that it is still an open standard (that mozilla has actually implemented, just poorly).