In Surveillance Debate, White House Turns Its Focus to Silicon Valley
nytimes.com
nytimes.com
Industry cannot legally arrest people. Government can. Industry cannot forcibly draft men over the age of 18. Government can. Industry cannot force you to pay income tax. Government can. A far tougher standard must be applied to government because only government is allowed to get away with certain things.
Perhaps more importantly, corporations, thorough their lobbying, all but control the government as it stands today. Very little happens there that they do not direct. The only reason SOPA did not pass was due to corporations expressing their displeasure.
Because the government has the right of violent force over you, it must be far more closely controlled to ensure that opportunity for abuse of that right is minimized.
To say that privacy violations by the government are bad is not to say that such violations by private entities are good, but they are certainly far less costly.