[citation][nom]Silent Ricochet[/nom]IIf they had intended this all along, why even include a chip? [/citation]
They probably included because it would have cost more money to have it not included, since this hardware is used in other phones. In the end, this good of hardware without a 4g chip doesn't exist.
As for why they disabled it, that really does not make sense to me. I am sure rooting gets around this, but to remove the ability to let the end user decide if they want to use an official feature should be left up to the end user. If Google has a valid reason for doing this I hope they explain why, otherwise this is no different from Apple's behavior.