[citation][nom]jugzor[/nom] Should the police not try to stop drug trafficing and such because drug dealers still get drugs through and find new ways to get around cops? No.[/citation]
i agree with a lot of what you said but using your drug trafficing analogy, what blizzard is doing is saying because we know that most drugs are transported using planes we will now prevent air travel.
the negative impact it will have on users of their title outweighs the potential blocking of pirating.
i have often played on hacked copies of a game, if it is a title people want to play at a lan and you dont have it, then a hacked copy will be readilly available... but in most cases if this game was then worthy of repeated play i would go out and buy the game, not only because i felt it was the right thing to do but because the valid copy would then allow me to get the latest patches and expansions. When we look at a game like starcraft i think Blizz would be surprised at the amount of legitimate users of the game that was first introduced to it by some hacked copy.
hacked copies have a valid marketing role to play

i know it sounds weird but its like having a trial version before commiting to the real thing.. take WoW.. there are many emulators out there, i myself started playing WoW on an emulator... found the game enjoyable and wanted the support of fast patches and expansions and have been a loyal customer for more than 5 years now all because of a 2 month exposure to a hacked copy.
I just think that if piracy was the real concern here, there is surely better ways to combat it that removing LAN capabilities. they can release the game and introduce regular updates that require a valid copy and an connection to battlenet for patches/ new maps/dungeons... sure even these will make its way into the hacked copies eventually but there is always a few weeks lag and anyone that plays the game seriously would then make sure he had a valid copy to get the latest updates.
talking about the asia market where the hacked versions seem to be the biggest problem, Starcraft has become like a national sport there... would this have been possible without the hacked copies ? probably not, sure blizzard lost out some revenue, but think of the massive marketing exposure the game has gotten because of it.. and the loyal fan base they have now built up in the process... all those 14 year old kids that played their hacked version are all grown up now and have incomes of their own... these are now all potential buyers of the new release. so sure piracy can be devistating for a new release small company developer, but this is blizzard!!!! the marketing they get out of it is probably worth more than the initial loss in sales revenue.