The radios are getting out dated and its so obvious that people are using voice assistant a lot. In the word of google assistant, Apple Siri and Amazon Alexa people interaction with there smart phone will be reduced soon. The things about videos are many people never watch the video, but they do listen to it. Podcast are a great way to spend time during when you hit the gym, jogging, traveling etc. learn knowledge even when your traffic is the important step to build your empire