Here's a familiar scenario.. A founder is pitching to investors. Their ARR is growing, the product is solid, the team is scrappy and motivated. Everything looks good — until an investor asks, "What's your NRR?" Silence. Not because they don't have the number. But because they've never really thought  about it. They've been so laser-focused on new logo acquisition that the revenue quietly walking out the back door barely registered. That silence? It's expensive. The Leaky Buck