Interesting thing about VS and Xcode is that they do not really try to compete with somebody or fight for attention. Both Windows and Mac/iOS developers would use less useful tools if they still let them make products for the popular platforms. JetBrains, Borland and others are fighting for attention and developers' love. They must try really-really hard to make people choose an alternative to the official tools. So…
I personally think that Microsoft should stick with things that only Microsoft can do , and leave the more cutting-edge innovations to others. Example: the test automation tools into Visual Studio were terrible. Maybe they still are, I don't know, I've stopped using them. nUnit is just better. Their automated refactoring stuff may be OK, but the stuff from JetBrains is much, much better. Don't get me started on Team…
It went from "just plain bad" in VS2008 to "horribly awful" in VS2010. So awful that someone at MS named the process that manages the unit testing "QTAgent", so that when your machine slowed to a crawl and you opened the Task Manager to see what was wrong you'd see "QT" and conclude it was a background update issue with Apple QuickTime.