Doctorow: The coming war on general-purpose computation
And it doesn't take a science fiction writer to understand why regulators might be nervous about the user-modifiable firmware on self-driving cars, or limiting interoperability for aviation controllers, or the kind of thing you could do with bio-scale assemblers and sequencers. Imagine what will happen the day that Monsanto determines that it's really... really... important to make sure that computers can't execute programs that cause specialized peripherals to output organisms that eat their lunch... literally. Regardless of whether you think these are real problems or merely hysterical fears, they are nevertheless the province of lobbies and interest groups that are far more influential than Hollywood and big content are on their best days, and every one of them will arrive at the same place -- 'can't you just make us a general purpose computer that runs all the programs, except the ones that scare and anger us? Can't you just make us an Internet that transmits any message over any protocol between any two points, unless it upsets us?'"
