
In this segment, Jason M. Lemkin explains why many companies get marketing wrong because they rely on overly simplistic ROI metrics, especially Customer Acquisition Cost (CAC). He illustrates the flaw with a $5,000‑a‑year SaaS deal: spending $5,000 to acquire a $5,000 customer makes no sense, yet many marketers treat CAC as a hard ceiling. Lemkin points out that a lot of acquisition happens through viral, word‑of‑mouth channels that have near‑zero CAC, and that the true cost of acquiring a $5,000 customer can be much higher (e.g., $10,000) but is justified when the customer stays for multiple years, refers friends, or contributes to fundraising success. He warns that if marketers view CAC too simplistically, they will under‑invest in marketing, leading to stagnation and failure.










