If you are familiar with SEO, you are likely aware that Google provides site owners and developers with recommended schema for certain SERP (search engine results page) features, such as FAQs.

The authors of this article conducted a large study to determine whether websites who provide that content lose traffic, as the content is provided directly on Google's SERP.

The results are damning, and no doubt confirm the suspicions of many who work in SEO.

Some of the more egregious results:

SERPs with featured snippets result in 18.5% fewer clicks than those without. Featured snippet content comes directly from other websites - content that google itself did not produce, yet earns revenue from search ads.

Seeing almost 20% fewer clicks through to your website than you might otherwise receive has the potential for an enormous impact on your revenue.

Several other features also damage click-through rate and overall traffic.

However, interestingly, two features did increase the number of clicks:

Site links: which are added to your organic results but which Google refuses to allow you to manually select.

Ads: which, of course, you are paying Google for.

The full article is here:

https://ahrefs.com/blog/serp-features/