You forget that Ferrari has sucked as much as they have dominated. The Ferrari era of the late 90s-00s, was offset by their crappy seasons from 1990-1996 or 1997. They had their break with Prost in 1989, but before that it was, what, G. Villeneuve who won their last title?
The tifosi have suffered through many a hard time before.
Also, Renault has significantly upped their game. The R25 finally has the power to match up the superb handling and drag launches, and Alonso and Fisi are top notch drivers. Maybe MS and RB are finally at an end to their reign?