Favre had to have it beaten into him. I suspect Romney may be of the same mindset.
I've said it before and I'll say it again -- I believe that Romney is the only serious GOP contender that would be unable to beat Obama, because Romney's negatives defuse any arguments against Obama, e.g., government heath-care insurance takeover, corporate bailouts, etc.
Myth Romney has been so coy and nuanced about running that Americans won’t have his decision until 2013 at the earliest.