WebGL spec came about reasonably fast but took a very long time to become robust and well supported across all OS/hw/browser combos. Go read hn comment threads

WebGL spec came about reasonably fast but took a very long time to become robust and well supported across all OS/hw/browser combos. Go read hn comment threads on webgl submissions and count people complaining about os or browser caches. GPU drivers are really buggy, especially if you try to cope with what is installed vs prompting users to upgrade their os or drivers.