That's a funny comment. You're saying there will come a day when we will all throw away our PCs, tablets, and cell phones and rush to eBay to buy transistor radios, and the world will be great again. Streaming & podcasts aren't just the future. They're the present.
Well podcasters can't play popular music on their shows which rules out a huge segment of audio entertainment. No hosted music shows, countdowns, concerts, artist interview features including full songs, etc. At least not until the music industry agrees on a way to allow it.
That means most, if not all podcasts, are talk shows. And most of those are longform talk shows requiring a time commitment by listeners. Not everyone is into that. Personally, for most of that kind of subject matter, I prefer to read. The main type of talk I really like to listen to is live news and I don't want to hear that in a prerecorded podcast.
In my view, there's a lot that the radio business can and should do, but the whole industry now operates purely in terms of money manipulation instead of creative programming innovation.