Why isn't this part of the OS?

I'm constantly Synchronizing things, and I think I've finally found a tool that will help with a large part of that chore:

SyncToy is a free PowerToy for Microsoft Windows XP that provides is an easy to use, highly customizable program that helps users to do the heavy lifting involved with the copying, moving, and synchronization of different directories.

[ SyncToy for Windows XP ]