Last week, Amazon launched a major update of its line of Alexa-enabled Echo smart speakers and displays . The redesign — led by former Microsoft design chief Ralf Groene , whom Amazon Devices & Services head Panos Panay coaxed out of retirement — included two new Echo Show smart displays. According to Panay, these new models are the first step on a road to building “products that customers love.” But there’s one big barrier to customers loving their Echo Shows: ads. In recent months, full-