AI citation coverage in B2B is not a company problem. It is a vertical problem. Across the nine verticals studied here, the gap between the best and worst covered vertical was [FIELD: percentage point difference between highest and lowest vertical median, any engine coverage] points, wider than the gap between the median company and the top quartile inside almost every vertical.
Hold a CDMO and a cloud reseller to one benchmark and you will overspend in one and underspend in the other. We enumerated a full prompt set per vertical, then checked citation across five answer engines in two waves. Median coverage was, the top quartile reached and were cited nowhere at all. Four attributes separate the top quartile, and three of them are not on your own website.