It's only a matter of time, Microsoft and Apple won't have a choice but to adopt WebGL.
It's amazing what WebGL and Javascript can deliver, we've got models with hundreds of thousands of polys showing off really nicely on our site. If you like this car, check out the hundreds of models like it in Verold Studio - http://studio.verold.com
In Safari, you have to enable Developer mode and then turn on WebGL. In iOS, WebGL is only available in iAds. WebGL is certainly a threat to Apple's marketplace, but it's also an essential component of HTML5. Hence my prediction that they will have to come around.
It's amazing what WebGL and Javascript can deliver, we've got models with hundreds of thousands of polys showing off really nicely on our site. If you like this car, check out the hundreds of models like it in Verold Studio - http://studio.verold.com