Earlier quoted context omitted.
I could argue (though don't really agree) that Andrus Nomm was a threat in the same way as Bernie Madoff. Neither was running around shooting people or starting fires. The same could be said for elderly war criminals. There are situations in which it is right to send people to prison without them posing an active and dangerous threat. Whether this in one of those situations is more arguable.
It would be really hard to argue that. Bernie Madoff was more like someone who robs banks, or e.g. ATMs (i.e. no danger to human lives, but money stolen). Megaupload didn't steal anyone's money, and while people did get content without paying for it, it's not very clear that they would pay for it if it wasn't available for free. One undermined the public's confidence in the strength, fairness and security of financia…
There is loads of evidence of the Megaupload team getting a bunch of copyrighted content and putting it up there. The team themselves. Can't really hide behind safe harbor with that.
If I were handing out burned DVDs of movies to people, I'd probably get arrested too (even if selling DVD burning equipment would be fine).