Having legit copies does improve and counteract piracy, it also improves and controls content and your digital rights. Its why you can buy movies in foreign countries legally. If you don't your more likely to expand piracy.
Nothing anyone really does will ever stop piracy. Your only trying to minimize it when you improve content distribution. People who think they can stop it completely are not being realistic to themselves, and the market. it happens get over it. But you encourage it if you have something people want, and you sit on it for some time. That is the business argument of this.
Myself, as I guess a newbie and not knowing the things of the last 15 years or so of the EXJW might be missing some key information, but the business side of me see(s):
1) Copyright - yes someone holds it and controls it.
2) Publishing - hasn't been done in some time, and is not available in digital format, has limited availability. (they didn't adapt the model for content distribution in an internet age, and copies are more rare than an HMV store or a blockbuster video)
3) How to get this legally into more hands for revenue of the copyright holder. Unless the copyright holder has some visions of this being a valuable rare book to sell at a later date.
That is pretty much it. It is not a debate over piracy, which was and is never going to be stopped. I thought the debate was over respecting the copyright and getting the book out, not whether or not we could stop piracy.