Experimental support ala prefixes is still happening, they just stick it behind prefs now, so devs can turn them on to experiment with, but they can't be used i

Experimental support ala prefixes is still happening, they just stick it behind prefs now, so devs can turn them on to experiment with, but they can't be used in production sites. This was done in response to webkit becoming the new IE6, especially in mobile land, where countless (shitty) devs were using prefixed properties as essential parts of their stylesheets, thus breaking sites for other perfectly good browsers like Firefox and Opera. Also grid isn't really a case of IE being forward thinking, Microsoft just happened to create the grid spec, so it's more a case of pushing their own solution, rather than being fast on implementing a new tech.