The underlying fallacy in prioritizing high search volume keywords is:

Prioritizing keywords solely based on high search volume can be a fallacy because it incorrectly assumes that more website traffic automatically translates to more paying customers. While high search volume indicates broad interest, these keywords often lack specific commercial intent. Users searching for general terms might be in the early stages of research and not ready to buy. Focusing on keywords with lower search volume but higher commercial intent (e.g., "best CRM software for small business" instead of just "CRM software") often yields a better conversion rate, as these users are closer to making a purchase decision. SEO tools provide estimates, not definitive numbers, but their general accuracy isn't the core issue. While ranking for high-volume keywords can be challenging, the difficulty doesn't negate their potential value if they align with customer intent.