I don't think any petition or fight will bring any film back when Kodak has made up its mind to discontinue it. The reality is it's going to be gone and that's it.
Correct. The only petition that matters is the one where you "petition" the marketplace with your coin, by BUYING THE FILM IN SUFFICIENT QUANTITIES TO MAKE IT A PROFITABLE PRODUCT.
Why in the hell would Kodak reply to a petition drive by reprieving a discontinued film line? What's in it for Kodak? It goes like this:
1. Discontinue a poorly-selling film beloved of a few;
2. Endure online scourging and abuse, along with plenty of managerial advice and manufacturing pseudo-expertise;
3. Reprieve condemned emulsion. Bask in temporary PR glow resulting from thy mercy;
4. Enjoy transient bump in film sales as spooked regular users buy their year's worth of film in two days; and as curious non-users of the product buy a few rolls to see what all the fuss is about. Continue to lose money, albeit more slowly;
5. Watch as surge subsides and sales are now even worse than baseline, since everyone's stocked up; and since previous non-users get reacquainted with the reasons they never bought the stuff in the first place. Lose money more quickly;
6. Re-condemn the film, and be flailed like an oarsman in a slave galley in high-traffic online forums dedicated to film photography. Hear calls for your corporate demise, since you've refused to make that which people didn't (sufficiently) want until you no longer made it. Count money lost during reprieve. Explain to shareholders why any of this made sense.
I absolutely love these OMG-They've-Discontinued-My-Favorite-Film threads, which reliably pop up like daffodils every time some beloved emulsion is dispatched to Valhalla, to the dismay of both its users. Interesting windows into human nature, these threads are, and the insatiable need people have to feel like they individually count in the universe, or have some control.
BUY WHAT YOU LIKE, USE IT, and TELL A FRIEND. The marketplace will take care of the rest.