More notes:

Here,
here
and here.

The Contextis report is highly speculative, and the issues it refers to are known. It offers no bombshells, and none of it is news to WebGL's architects.

WebGL is still a shiny new technology, and as with so many web technologies before it, things have to be ironed out. And they will be.

The battles over HTML5 and its related technologies have been bitter, and it could still get worse. The web browser's becoming a more important piece of software, and this latest evolutionary jump has bestowed browsers with a great deal of power based primarily on an open model. Microsoft, as we all know, is a champion of proprietary systems.