A Victorious study reported in Search Engine Journal finds 90% of brands receive zero mentions in AI search results. That invisibility hardens this week as Google swaps Gemini 3.5 Flash in as the default model behind AI Mode and Search, a shift Simon Willison and Latent Space both flag as a quiet reset of the citation stack. Two themes collide: most brands are already absent from generative answers, and the model deciding who gets surfaced just changed under them.