This goes to show how far a title can take a person.
Without it, Kate would be a fixture in the tabloids as a mistress, like Camilla. She wouldn't be called an official girlfriend, by now she would be a well established mistress and would be still clubbing with William while he makes a go of his official life. I am certain she would be seething mad with rage.
She wouldn't be on the cover of Vogue, would not at all be someone who would be feted as a fashion icon.