For now. What if Google chooses a different OEM for the Nexus 10 II? The Nexus business model basically means one winner (chosen by Google) and N losers.

a different OEM like... Motorola?

N losers, like Samsung lost with the Galaxy S3? (Or the S2, or motorola lost with the droid, or ...)

The full Nexus business model (where the Nexus is sold at cost so regular Android phones look overpriced) just went into effect. If the Galaxy S4 is $500 and the Nexus 5 is $350 but they have similar specs, Samsung could be in serious trouble.