Ghostwriting practices. Who Should?

I would like to comment today on current presidents and their use or disuse of ghostwriting tactics. Obama’s book The Audacity of Hope: Thoughts on Reclaiming the American Dream was not a ghostwritten book but rather a book written by Obama himself. Hillary Clinton (Hill-dog) was written by ghostwriters, who received about 6 % of her total profits and royalties. How about ghostwritten speeches? Do presidents write their own speeches? What category would these forms of authorship fall in? Are they effective or should presidents write their own speeches? Personally, high effective leaders in any profession value their time. Taking time to write a book or their speech would dramatically decrease their effectiveness, unless they have time. Thus, I argue that these types of people, with their ghostwriting authors, should not be criticized for their practices. Many examples include Bush, John Maxwell, Donald Trump and many other high effective leaders. My grandpa wrote a book I Can See Clearly Now, but he wasn’t expecting it to be on the best sellers list, so he included the author of his book in bigger letters than his name. However, economics would say for many famous people that putting their name without the ghostwriter would dramatically increase their sales. I was relatively oblivious to how widespread these practices were until now. For example now I know that the Britney Spears mom’s book about parenting probably was not written by her. So who should be criticized for their ghostwriting practices and who shouldn’t (or maybe not allowed).