GTM ClubA warm intro converts to a meeting at a rate cold outreach never reaches, because the trust is borrowed rather than built. The cost is that it does not scale on its own; it has to be engineered.
Engineering it means mapping who in your network is connected to your target accounts, asking for the intro with a message the connector can forward in ten seconds, and making the connector look good afterwards. Founders and early teams should run this before any cold channel.