The Costco CPG brand strategy 2026 that actually works — that produces authorization, velocity, and the kind of durable channel presence that transforms a brand's commercial trajectory — is not the strategy the brand constructs from the outside looking in. It is the strategy built from the inside knowledge of how the Costco buying process works, what the Costco buyer's authorization criteria actually are, and what the Costco member's purchasing behavior in 2026 specifically r