In fact, George may not even recognize that he’s expected to be king one day. In 2018 royal biographer Catherine Mayer told E! News that Kate and William had decided not to inform their son of this fact until he is older. “With George, they are trying to delay that moment of realization and give him normality before they thrust this on him,” Mayer said.
Mayer went on, “[The likelihood that George will become king] will be, nevertheless, part of his upbringing both in terms of what he sees his parents and grandparents doing and probably quite soon a beginning of an understanding that he is in public life and what that means.” By contrast, William himself knew from a young age that he would eventually be king.