On the one hand, it would be good to still have it up for those who are interested, but perhaps they don't want to confuse casual fans? (Or people who go searching YouTube for the actual first episode - for the record, there's nothing but miles of third-party-download links, so the pitch might be the only 'real' video they find.)
It also might be something to do with whatever it was that initially prevented them from showing the footage. Maybe the changed allowance that let them put it on YouTube only lasted until the show started to air.
It also might be something to do with whatever it was that initially prevented them from showing the footage. Maybe the changed allowance that let them put it on YouTube only lasted until the show started to air.