Tomorrow's real presidential contenders are today's presidential newbies. Even Trump didn't win his first time (running in 2000 in the Reform Party, and sorta campaigning for 2012 GOP).
Everyone announcing wants to be a potential benefactor of expecting Trump to eat a foot so big that even he himself can't cough it up. I'd say the odds are good that one of them is going to inherit a windfall and personally I think it will be DeSantis.