conpanies usually either bake it into the game as tutorials or have digital manuals nowadays. it was always about cutting physical sales cost (as the physical media itself has a cost attached to it)

IDK how it works on the current console devices, but on the yhe previous generation, the wiiu for example would give the player the option to open the digital manual when the game is launched by pressing the home button and selecting the manual. one of yhe pros is that the manuals digitally tend to be more complete and not rushed to save on cost. take for example, the Xenoblade Chronicle X manual is 142 pages long, something that would basically never exist physically.

it's penny pinching, some have soulless digital manuals.