Okay but a game doesn't have to have combat in order to be considered an RPG either. Ditching combat altogether would allow Larian to focus on other things such as rolling dice and crafting shoelaces.
Are you crazy?
I think Disco: Elysium did pretty well as a game and to my knowledge combat is not a focus of the game. Just following his train of thought.
Or Planescape Torment. Which I think is an inferior game to Baldur's Gates exactly because it doesn't have combat. It's a choose your own adventure book in game form and honestly, I'd rather read a book.