Given why BT is all over the place, this move will never work. The cat's out of the bag. He won't get stuffed back in. Idol said it. All that the "official" BT people will do eventually is isolate themselves into a much smaller user group. Without enough users, BT isn't worth it. The alternative is to stay compatible with what the masses will continue to use. And in that case, why bother with the closed source?
Edit:
While the BitTorrent client and the latest protocol may not be published, therefore technically closed source, the protocol is still open. The details of the protocol extensions, including all the latest revisions, are still available to whoever wants them, providing they obtain the easily obtainable SDK license. BitTorrent's recent move isn't going to make everyone happy, but those wishing to help develop the BitTorrent community probably won't notice much of a difference.
I should have read the article before sounding off. If uTorrent is the most popular, is now officially part of the BT thing, and the protocol remains open, then I don't see things diverging in the future. Info will still make it to whoever wants it, license or no license.