is millionaire much more than a billionaire
'Forbes' Billionaire List: JK Rowling Drops From Billionaire To Millionaire Due To Charitable Giving. Even Harry Potter's wizardry couldnât have prevented this blow. JK Rowling, the first female novelist billionaire, recently lost her exclusive status because of some very good deeds. Forbes, which has produced an annual list of billionaires for the past 25 years, said that the Harry Potter author dropped from billionaire to millionaire due to Britain's high taxes and her charitable giving.