Instinctual Fear & Psycho

One theory of our attraction to horror relies on a concept of instinctual fear, as Carroll from The Philosophy of Horror says as follows: 

 "[P]hrases like 'instinctual fear' may really be a kind of shorthand for the complicated notion that in the positivist, materialist, bourgeois culture in which we find ourselves, certain thrills and fears that were commonplace to our cave-dwelling ancestors re rare; and these thrills can be retrieved somewhat by consuming horror fictions...reliev[ing] the emotional blandness of something called modern life. (165)" 

This concept of a thrill being something that contrasts what is modern, can be applicable to more than just the instinctual fear described by Carroll when watching Alfred Hitchcock's Psycho. The film begins with a sequence where our protagonist is shown to be immoral for her time period, sleeping with a man she is unmarried to but excused because of love, shown to steal cash from a man who boasts he can afford to lose it, but it's for her husband-to-be. She is atypical for the time period, a flawed individual with motivations to do so usually the role of the man. Right away she is risqué, and thrills the viewer of her time. This continues on as she is portrayed running from the law, lights used in deep contrasts of bright white to blind her and the darkness of her environment concealing a killer even as she finds relief from the terror of the chase. 

The fear and thrill preys on stereotypes and expectations, while inventing new ones that cause the film in this current time to be seen as almost predictable. At the time, Psycho was the first to show such close violence as the infamous shower scene, as well as sexual immorality in the opening scene between the lovers. To see on a screen for the first time awakens thrills as the taboo of the modern life becomes a horror story. Psycho was attractive yet appalling because it contrasted so deeply with what had come before and what was considered modern life, awakening that "instinctual fear" perhaps that Carroll discusses because it was risqué.  

Today, what might it take to be seen as risqué enough to awaken instinctual fear? Has horror adopted too many repetitive tropes to truly terrify more than jumpscare?