The 18-Month Category Window: Why AI Visibility Share Is Being Locked In Now
In most marketing channels, a late start is a fixable problem. In AI visibility, the evidence suggests otherwise. The brands that establish category authority inside the next 18 months — the period when training windows, retrieval corpora, and citation graphs are still forming around each vertical — will be disproportionately represented in the answers LLMs compose for years. This is not vendor narrative; it is a structural property of how these systems learn. This post explains why, and what a responsible first-mover strategy looks like.