It's too late. I don't think people angry at the patent suits pulling out is going to make any difference to Apple at this juncture. They know developers are disposable. Not to mention that a significant percentage of their fanbase is cheering them on.
Well, yeah, I don't think that my not purchasing Apple products is going to do anything to their bottom line. But it'll make me feel a little better about the things I buy.
There is an army of developers paying $99/year (and Apple hardware) and spending time on apps that may be rejected or suspended at any time in the appstore.