It would be a service problem if the chapter was released officially in one language then translated to others by pirates faster than the official company, but that is not the case. The official Sunday release includes the English, Spanish and Portuguese translations (among others) and they are all made available at the same time, for free for several regions.
Pirate websites only manage to release it faster because they get access to the unfinished product and then have people work on them with no regards to any work laws in order to finish and release it as soon as possible without any schedule or time constraint.