Losing clients because we don’t offer social media?

We’re a three-person agency focused on PPC, SEO, and content strategy, and we’re not looking to expand the team. But we keep running into the same wall: prospects ask about social media management, and the moment we say we don’t offer it, you can feel their interest cool. Some walk away entirely.

So the question is: do we add social media to stay competitive, or is there still a place for agencies that stay focused and specialize?