The title is vague enough that it misled me a bit...
By "audio industry", the author is only talking specifically about performance-oriented (not technical) audio media production such as radio or podcasting, not anything else that would fall under the broad umbrella of "audio industry".
By "audio industry", the author is only talking specifically about performance-oriented (not technical) audio media production such as radio or podcasting, not anything else that would fall under the broad umbrella of "audio industry".