«We don’t know how to make a computer that can run all the programs we can compile except for whichever one pisses off a regulator, or disrupts a business model, or abets a criminal.

The closest approximation we have for such a device is a computer with spyware on it— a computer that, if you do the wrong thing, can intercede and say, “I can’t let you do that, Dave.”»

From a very interesting (long) article by Cory Doctorow from 2012.
Enjoy!