There is a huge podcasting industry outside of Apple. There have been hundreds of players in the game.

Many traditional podcasters come from talk radio.

One can created a podcast simply my recording and editing an audio file with Audacity. One can host podcast on any discount web host ... although it is usually better to use a content distribution network.

Most people who are serious about podcasting will host their podcast through a service like podbeam. Apple is just a tool used to market the podcast.

The one thing podcasts lack is a decent way to monetize their recordings.

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