If D&D were real no one would be powergamed or munchkinned out.
Because if D&D were real, none of us would know the rules of the game.
Patron contracts would be well read. There's be a new law specialty and warlock agents, if even only underground.
"Page 4 says you can contact my client in his dreams. My client ofers 1% more of his soul to not mess up his fantasies."