Force India, Sauber, Lotus and WIlliams are the 4 large 'privateer teams'. Smaller ones like Marussia, Caterham, Haas and Forza Rossa will come and go.
If 5-6 of these teams were to band together and give CVC and the FIA an ultimatum that they will all leave the sport unless the powers that be agree to share revenues more evenly and commit to cost cutting measures such as price controls on power units, less frequent regulation changes, spec safety cell etc - would anything happen?
Does the midfield hold any real power in F1?