5 points
For RPGs they almost always outsource the writing. Crafting a good story is not really a skill that a lot of the major developers have a lot of call for (normally they just have you shoot the bad guys because) so they don’t have people on staff for it. In RPGs stories are a lot more important though, so they actually have to put some effort in.
1 point
Aren’t most RPG video games developed by companies that primarily do RPG video games? Like, Warhorse was founded specifically to make KCD. Fallout Shelter is the only non-RPG Bethesda has developed since 2008. And The Witcher Adventure Game and the Gwent games are the only non-RPGs CD Projekt Red have ever done.