Eh… not going to get into the general ethics of software piracy, largely because I’m in the GNU camp. (i.e., why pirate software—risking prosecution—when you can get 90–125% of the functionality for free, legally?)
Anyway, wikipedia had a couple good links:
http://arstechnica.com/journals/microsoft.ars/2007/03/12/microsoft-executive-pirating-software-choose-microsoft
http://apcmag.com/5254/thanks_for_letting_us_pirate
The first link to Arstechnica is more of a “if you’re going to pirate, please pirate our software”—meaning that if someone is stealing your software, they’re more likely to buy it in the future.
The 2nd one is a horribly written article talking about how the Pres. of Romania credits the rise in IT savy in his country with software piracy. Reading it, it may be sort of a “spoof” article. Although, I have heard similar arguments quoted on legit news from Chinese sources.