Earlier quoted context omitted.
I think Microsoft feels it needs to provide a better browser because the popular alternative is controlled by their competitor. Chrome itself does its best to make sure you get pulled into the Google ecosystem - you need a Google account just to use the sync feature. On top of that, when you switch Chrome to its full-screen Windows 8 app mode (for touch screen support, etc.) it basically turns into a clone of Chrome…
Yeah, I think Chrome is the browser to beat right now... but does most people really use the sync feature? I might be wrong but my guess would be no, and that's true for a lot of the other "additional value" features that browsers add
I certainly do; its a pretty significant convenience if you are a device-hopper.