To add insult to injury, we probably would have gotten WebGL 2.0 Compute, which was initially done by Intel, if Chrome had not refused to ship it on Chrome, arguing that WebGPU was right around the corner, and it would take too much space, this was about 5 years ago.

And to those rushing out to point out the excuse part about OpenGL on Mac not having support for compute, WebGL already back then wasn't backed up by OpenGL on all platforms, see Windows (DirectX), PlayStation (LibGNM).

Also eventually Safari also moved their WebGL implementation from OpenGL to Metal, and Chrome did as well, replace their WebGL to run on top of Metal on Mac.

So not really that much of a problem regarding the state of OpenGL on Mac as "required" implemenatation layer for WebGL.