The podcast business is still small. Which is great news for podcasts. – Recode

Advertisers put $314 million into podcast ads in the U.S. last year, which is totally tiny compared to things like TV — $68.5 billion — or internet search ads — $22.8 billion — or internet video ads — $11.9 billion.
— Read on www.recode.net/2018/6/11/17448802/podcast-advertising-2017-iab-small