Most instagramers are not influencers who can monetize well. Most instagramers don’t have a large follower base, which totally makes sense.
few podcasters can make a living from producing podcasts. Most podcasters make podcasts for fun. Some use podcasts to cross promote other things (eg books, music , e-commerce...). More and more companies produce podcasts, but they just treat podcasts as an addition to their social accounts to build audience and create awareness: https://lnns.co/b0jVr85WkQn