Can You Legally Play PS4 Games with `.pkg` Files?

http://mylesqirl347.bearsfanteamshop.com/can-you-safely-play-ps4-games-using-pkg-files

To play PS4 games using `.pkg` files, your console must be jailbroken. Jailbreaking involves modifying the PS4’s software to allow the installation of unsigned (unofficial) software, which includes `.pkg` files