Too bad that we have to worry about MS and IE not supporting it.
It is long past the time for the web development community to abandon this mentality. Look at how fast the web has progressed without Microsoft. Once WebGL is available in tablets (and I guarantee you they will), then you'll have a huge audience capable of playing these games.
Additionally it doesn't make sense in the case of games. What is the alternative here? Make it a downloadable exe? If they can download a game, they can download Chrome.
The attitude only makes sense in the case of content, when a less stylish webpage is a viable alternative.
I agree, I personally feel that as web devs with four other major browers that basically follow the same standards, we should spend our time targeting them. But to simply ignore the MS/IE user base is pure ignorance.
I had a hand in porting a chrome-only app (embark.delta.com) over to all browsers and we had to remove all of the "cool" advances just to get it to work with ie9. Bottom line is that the combo of MS/IE still, and will for a while, retard the progression that is being made.
As long as IE is player, we'll have to say "fuck, but what about IE?" when we see cool new advances. This is why I am happy about the mobile browser landscape