These don't seem like particularly new concerns to me, though. U.S. businesses have used 3rd parties to carry or store sensitive information for decades.
Do you worry that Verizon is listening to or recording all your phone calls? Or FedEx is opening and reading the documents you're overnighting around? Or that document storage companies are opening every box they store, in case there's something useful in there? How do you know Quickbooks isn't mining your bookkeeping data so they can sell leads to tax or collections firms?
And what about IAAS and PAAS companies like AWS, Google Compute, or even hosting companies like Rackspace or Softlayer, who typically have root access to every machine they manage? How many companies--even big companies--own all their servers and the buildings they are in?
Ultimately, our economy is based on specialization and carefully constructed relationships of mutual obligation. Contracts have to mean something or there's not much business going to get done.