Someone opens ChatGPT, asks which tools are worth considering in your category, and gets a thoughtful answer that mentions your brand by name and positions it favorably. No click. No session in your analytics. No conversion event firing anywhere in your tracking stack. By every metric your marketing dashboard measures, nothing happened. Except something did — and the brands figuring out how to build a business model around that something are developing an advantage that compounds with every month the rest of the market spends waiting for the problem to fit a familiar measurement framework.