Martha van Berkel runs a company named Schema App and is a schema and structured data maven. In a video interview between Martha and Barry Schwartz, they spoke about that topic.
The two spoke about the growth of structured data adaption and how much Google is relying on the markup these days. Not only that, they talked about Google saying that adding structured data to your pages don’t yet give you a ranking boost, although it gives Google more clarity about your content. Does it help Google rank your content?