I've just read this article and think it presumptuous. They, like most of us, know nothing, really, and can only surmise. To assume that Catherine didn't do a proper job of work in her parent's business is somewhat offensive: my children have worked for and with their father from time to time and by golly, they earned their money. There are no slackers in this family and given the Middleton's business success from a base of zilch, I think that it's safe to assume that they're professional in their expectations, too. From the little which I know, Catherine returned home to live and work to escape the press, which I thought most sensible.
And, of course, most of the spouses in the BRF work in the family business to some extent or t'other, not to mention HM's own children, to some extent or t'other.
Nor can I believe that a well educated woman in today's world will suffer any serious identity crisis. Why would she? Necessarily her life and profile will be inextricably bound to her husband's but that's true of most married couples, not just princes and princesses. Much the same sort of presumptions were made of CP Mary whose royal 'career' I've followed, and they were entirely wrong, too.
To me, such comments are merely sour reflections on royalty, generally. In future, we'll have an opportunity to see Princess Catherine flourish and assess how well she's suited to her role in which, given her long relationship with William and intimate knowledge of his royal duties and expectations, I'm confident will be a success. She most certainly won't be another Diana, but should we expect her to be? As William said:
"No one is trying to fill my mother’s shoes. What she did is fantastic. It’s about making your own future and your own destiny, and Kate will do a very good job of that.”
As he knows her best of all, I'm inclined to believe him.