Well if the Govt use the new Amazon unlimited storage for all this meta data, the cost will come down from ~$400m -> ~$75 ($us60)/yr
http://www.theregister.co.uk/2015/03/26/amazon_unlimited_cloud_storage/
And even better still Amazon will be able to recommend us books, movies, etc without ever having visited their website! It sound like a win-win for everyone!