Re: No. Just no.
Glad to see someone else was thinking it. Milking one analysts blog post a bit much, eh?
It's not even that exciting anyway. In the unlikely event that Google did take Android proprietary, OEMs would deal with the new reality soon enough. They might whinge about restrictions on their ability to differentiate their products, but it wouldn't stop them making Android handsets. Windows Phone 8 was proprietary, OEMs had very tight restrictions on hardware design and UI customisation, and they had to pay for it, and they still signed up. Proprietary Android would probably be better for customers, with more regular updates and a more consistent experience, and it would be a brave manufacturer that would pull out and leave the field to others.