Windows is reliable now since NT came and gets shit done
Other than the fact that the system contains legacy code that's chock full of security bugs dating back to the early 1990s. Supporting legacy software is why Microsoft can't change and in the end, it's going to kill them. Other companies that are smaller and more agile will kill Microsoft.
Microsoft sees the writing on the wall, they know that the end is near. You can see that in how they are making apps for the iPhone and Android devices. Things like Office, OneNote, Skype, Outlook, OneDrive, etc. They aren’t making these apps for other platforms just for the sake of making them available, they are making them available because they need to or they’re dead.
The computing industry that we have today is not a Microsoft dominated industry anymore and Microsoft knows it. They sat on their desktop monopoly for too long and the rest of the industry flew past them while they were sleeping.
If in any problem you find yourself doing an immense amount of work, the answer can be obtained by simple inspection.