The article covers that in the final paragraph. "For all the powerful machinery available to government surveillance programs, they are subject to some court j

The article covers that in the final paragraph. "For all the powerful machinery available to government surveillance programs, they are subject to some court jurisdiction. That is not the case for commercial surveillance: Every aspect of daily life is tracked by smartphone apps, social media and websites. Whatever spying may go on at 33 Thomas Street would at least still be subject to legal oversight. The building really may be a monument to quaint ideas about privacy."