I think you should expand your SEO skills into marketing. Not because SEO is going anywhere, but because it helps you use your SEO knowledge to drive value across multiple marketing function areas.
How can you leverage the content assets you created for SEO through paid search? - Google Dynamic Search Ads
How can you help the social media team connect with a broader audience? - atomize blog content for organic social and run paid retargeting ads
How can you help the customer success team identify potential pain points with your product? Use search data to identify common questions and errors your customers ask
How can you support sales? Use search data to identify top competitor comparison queries
How can you strengthen your brand and control messaging during and after a crisis? Optimize your brands online assets beyond Your primary website.
The point is, the value of SEO extends far beyond organic search. It supports marketing, customer success, sales, product, and brand.
And as SGE and Bing evolve, the role of SEOs will need to as well. We will need to better understand consumer journeys, how searches evolve through the funnel, and how Google predicts needs and serves related “next step” content in the SERP