Because they're *not* duplicative: they are Microsoft's versions of the GPL and BSD licence,
only specially tailored so that they aren't GPL-compatible, as it has been pointed out above.
So they serve a very special purpose: have MS experiment with OSS without risking to
contribute a single line of code to the OSS world.
Are they bad (in that they betray the spirit of FLOSS)? Yes.
Are they OSI-compliant? Yes again (based on what I've read, I'll skip actually reading them
thank you :).
I really can't see another outcome out of this submission.
rehdon