[magicalist]

I think being able to differentiate in the browser market is a great thing. Chrome can offer tools for enterprise use, but I seriously doubt that they are ever going to offer long term support for old versions. Meanwhile that's Microsoft's bread and butter, but that means that if you want a larger portion of experimental or recently finalized web features, you have to go somewhere besides IE.

What's bad is when you have to cater to old, broken IE behavior because you have to support that part of the market. We're seeing much less of that and more just "IE doesn't support new feature X". That does hold back some of the newest stuff, but not having typed arrays is not at all comparable to having to support IE6, for instance.

Personally, I would be ecstatic if we can maintain for as long as possible this nearly even split of marketshare over three (desktop) browsers.