The most interesting "rock" is trending towards being smaller and exploring niche sound landscapes. Big, arena "male chicken" rock doesn't quite fit with our current cultural zeitgeist. Kids are more technologically savvy and self-aware than ever before and the current model for cool is divided between commercial bling hop and "artistic" indie rock that snooty journalists like. Rap and hip hop is the new big dumb heavy beast. Rock has matured into some really cool places though but the channels for receiving it have changed.