Just imagine what could happen:
- FIA does punish Ferrari in a very extensive way (even bans them for the rest of the season)
- Ferrari says: 'Thank you, goodbye' and leaves F1 to move on to CART
What do you think will happen then? As much as I ahte to admit, but Ferrari is an essential part of what is considerd the thrill of Formula One. Without them the whole thing would loose a lot of reputation. CART, however, would be glad to have Ferrari in their series. That means taht the FIA would punish themselves if they do no treat Ferrari well.
Look here see how Ferrari deals with FIA decisions they do not like (second paragraph):
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www.atlasf1.com]
REHAB IS FOR QUITTERS