One problem: the biggest piracy is done digitally. In store shoplifting is neglible. Hell, Loss preventions biggest concern is the cash register, not the product. At Harris Teeter they randomly do audits on our registers and record how much over or under we are what we're supposed to be. Neglible amounts aren't a big deal though(I have had 0, -25 cents, and +25 cents so far)).
Still according to the information made availible to us, about 13,000 dollars is lost a month throught theft, mistakes, or any other thing. And we're just a grocery store.