Are you looking to do a complete radio station? That would seem more challenging. If you only want to do a show or podcast it really depends on how complicated you want to make it. I do a podcast that I livestream using StreamYard with a video camera and microphone and then because my guest is remote whatever equipment they want to use. I use Anchor as the podcast platform which then pushes it out to most major podcast platforms like Spotify, Apple Podcast and more.
I could definitely make it a higher level production with better and more cameras and I could control more variables by having guests come in studio. You will likely want to have an outside team do post production if you want anything too much changes from the live podcast as the editing can take up a lot of time.
Happy to answer any specifics if I can.