[azakai]

It is fair to say that there were some security concerns, but those have been addressed, and actually Microsoft - which controls the OS and the browser, and is heavily involved in driver quality - is in an excellent position to create a safe implementation of WebGL.

It's fine that it took them time and they wanted to do it properly. It is however annoying that they did not give any forward notice of their intention to implement WebGL and have not been active in the standards bodies at all. For example, Microsoft input on the safety aspects could have been very useful.