A famous psychic has to provide people with what they want rather than simply what they need.
A conscious 'want' trumps a subconscious 'need', and that's why people jump at shiny things dangled in front of them. Unfortunately, most people want comfort without education and power without responsibility.
A famous psychic's main tool is show business - the art of giving people what they want. As people turn to pharmacists for assurance of bodily health and politicians for assurance of safety, they also turn to famous psychics for assurance of emotional and spiritual well-being.
Some famous psychics may do it only for the money and provide only comfort without a solution. Other famous psychics realize that comfort helps with communication and offer a solution if the client is willing to invest energy into it.
Fame is a tool and also a power, and the famous psychic bears additional responsibility.