It's not been brought up for a while, but since last time I've had a little think about piracy and have come to the following conclusions, not specific to anime and manga but to all illegal downloading:
Being able to download things for free
should be a great thing. Fair-minded people with enough money can try something first and then buy if they enjoy it, and people who can't afford it have gained access to an experience they otherwise couldn't have. Before, the latter group wouldn't have bought anyway, so the industry isn't damaged by them.
However, it is damaged by a final group of people who also seem to be the largest; Those who could afford the product, but prefer to rip it off and instead funnel their cash into superfast broadband to steal
even more, faster. But what geared a large part of society to act in such a greedy, selfish way? Consumerism. Telling you more is better since they realised that otherwise, everyone would have everything they wanted and stop spending. Except the people who originated the consumerist model didn't reckon on the internet - Now people can have all the entertainment they could ever want for a fraction of the cost. Legal, illegal... who really gives a toss? They're just words. People only obey laws they don't agree with for one reason; fear of being caught and punished, something which is unlikely to happen online.
Piracy is unfortunate for the genuine artists who lose out (ie; those who create what they want, not what will be popular). However I'll lose no sleep over the "industries". It's the entertainment industries which turn out the same crap over and over again who complain the loudest about piracy - because they're interested in money, not art. So f*ck 'em.
Art shouldn't be free. But it should be art. Now if you'll excuse me, I'm off to copyright that slogan.