To understand the demand for PKG files, one must understand the context of seventh-generation console gaming. The PS3 utilized a complex architecture, and its digital marketplace was a haven for add-on content. SoulCalibur V was one of the last titles to receive significant post-launch support through this method.
The PS3 store, while still technically online, has removed credit card support and many legacy items. You can no longer buy Soulcalibur V DLC through official means in most regions. The complete PKG archive is now a preservation artifact. soul calibur 5 all dlc pkg