Amazon, hoping to replicate the success of its Echo device, is poised to extend its eyes and ears into every part of your life with the launch of new voice-controlled and camera-equipped Alexa devices designed for bedrooms, living rooms and even your car. Amazon prides itself on its almost pathological focus on what its customers want, rather than what its competitors are doing. But its new Alexa products are clearly a response, at least in part, to new smart speaker offerings from Google and Apple. Amazon is betting that it can defend its franchise by using an old trick – aggressive pricing – and by finding ways