A consultant once earned trust through a referral passed quietly between two people who already knew each other's judgement. Social media replaced that whisper network with a public one, but not evenly: a B2B buyer researching who to hire is reading a different platform, in a different mindset, than the same person scrolling on their own time, and a small team with limited hours has to choose where those hours actually go rather than spreading them thin across both.
The honest answer is not "be everywhere." It is that the two platforms serve different buyer moments, and one of them carries most of the weight for a B2B service business specifically.
What does each platform's audience actually expect from a B2B account?
Instagram's audience is in a browsing mindset, primed for visual, personality-led content; LinkedIn's audience is in a research mindset, actively evaluating who to trust with a business decision. A consultancy posting the same polished-brand content style on both is answering a question neither audience actually asked: the Instagram viewer wanted to feel something, the LinkedIn viewer wanted evidence.
Where do B2B buyers actually spend research time?
Overwhelmingly on LinkedIn. Industry research consistently finds that roughly 75 to 85% of all B2B social media leads come from LinkedIn, commonly summarised as 4 out of every 5 B2B social leads, with every other platform combined accounting for the rest. That is not a marginal preference, it is the platform where a B2B buyer is already looking when they are close to a decision, which should settle most of the "where do we focus" debate before a single post is planned.
Can a small team realistically run both well?
Rarely to the same standard, and trying usually means both suffer. A specialist consultant or small agency is far more likely to be researched on LinkedIn before a call than discovered on Instagram, which is the practical case for weighting the larger share of a limited team's time toward LinkedIn specifically, reserving Instagram for a lighter, more personality-driven presence rather than matching LinkedIn's effort post for post.