In the wake of Apple’s iCloud security issues, CEO Tim Cook released a statement that said, in part, “when an online service is free, you're not the customer. You're the product.” In an interview with Time magazine, Facebook’s boss, Mark Zuckerberg, has a retort for that. With Facebook ramping up their own ad network, Zuck has taken offense to Cook’s comments, and challenges that Apple is who’s really out of touch with consumers. His proof? Your expensive iPhone.