Man, Jeb! is so fucked.
He inspires no one. He has no compelling ideas. He has no charisma - no stage presence. No personality at all, really. He has money, a famous last name, and that's it.
Mitt Romney also had money, but he also carried himself well, spoke with authority, and came across as professional and presidential. No one in the base was crazy-in-love with Romney, but he was a solid default candidate and people felt confident enough voting for him in the primaries.
Jeb! is just a big, worthless ball of blah. And I can't see his piles and piles of money saving him.