That's not necessarily an apples-to-apples comparison. The inputs for an unscripted podcast are vastly different from a scripted TV show. They're different mediums for expression, and each carries different costs.
That's the point: lower cost mediums are taking audience market share from higher cost mediums, and that will force job losses in the higher cost mediums. Those mediums aren't completely interchangable but at the margins there is some substitution of audience time and advertiser dollars.