Unfortunately, calls to boycott are rarely successful. The defect rate is too high because of the huge incentive to defect. Also, in this specific case, the collateral damage will be the buying public. If there's one thing that consumers have proven time and time again is that ultimately, all they want is the product; they don't care about your cause. Secondly, but possibly more importantly, customers respond negatively to being used as a means to someone else's end. Developers denying customers features and updates because of a patent lawsuit boondoggle is about as far from consumers' needs & wants as it gets. This reinforces the natural incentive to defect in a boycott scenario. Not only are you emptying the market of competition, but you are endangering the customer relationship. I'll be amazed if this garners any level of participation from the iOS development community.