He had been brought up to understand how to play the game and know how things need to be done/said to get the desired effect.
But this is the thing: I don't think he has been brought up to understand how to play the game. I think he's grown up feeling that those rules and protocols are repressive and stop him doing what he wants to do. He doesn't realise the extent to which they have protected him.
Harry's behaviour and attitude over the last year or so really resembles a rebellious teenager. It's all very "everyone should fuck off, but first pay for my security" in a regal version of "Get out of my life but first give me and my mates a lift into town."
What's frightening about it is that he's verging on 40, but yet he's behaving like a 14 year old. It's as though he's has absolutely no guidance whatsoever. He is coming across as the most spoiled rich kid in existence.