At least here by me, Whole Foods has started bringing in pork from a local farm, and that farm doesn't engage in any of these practices. They raise fewer pigs, but they give 'em space and some opportunity to forage. The cost per pound isn't much higher than WF's standard pork prices. So I buy that, since I do think pigs are intelligent and should be treated well. Changing what you buy says a lot more than some petition, too.
Vote with your wallet.
Vote with your wallet.