DTrace on MacOS!

I've just read about Apple's port of DTrace to the next version of MacOS. Is that cool or what? Not to mention a poke in the eye to IBM's Ross Mauri. Exactly how is this news not in the true spirit of open source, Ross? I see the Apple team didn't chose to port SystemTap...

Now, if Apple would only adopt OpenSolaris as the core for MacOS, they'd be onto a real winner! :-)