Many consumer Internet business executives are loyalists of the Lifetime Value model, often referred to as the LTV model or formula. Lifetime value is the net present value of the profit stream of a customer. This concept, which appears on the surface to be quite benign, is typically used to compare the costs of acquiring a customer (often referred to as SAC, which stands for Subscriber Acquisition Costs) with the discounted positive cash flows that will come from that customer over time. As long as the sum of the discounted future cash flows are significantly higher than the SAC, then people will argue it is warranted to “push the accelerator,” which typically means burning capital by aggressively spending on marketing.
The LTV formula, when used correctly, can be a good tactical tool for monitoring and comparing like-minded variable market programs, especially across channels. But like any model, its proper use is entirely dependent on the assumptions used in that model. Also, people who have a hidden agenda or who confuse a model with reality can misuse it. For many companies that subscribe to its wisdom, the formula slowly takes on more importance than it should. Seduced by the model, its practitioners often lose sight of the more important elements of corporate strategy, and become narrowly fixated on the dogmatic execution of the formula. In these cases, the formula can be confused, misused, and abused, much to the detriment of the business, and in many cases the customer as well.
10. Tomorrow Never Arrives. The Utopian destination imagined by the LTV formula is a mirage. It almost never works out as planned in the long run. Either growth begins to slow, or you run out of capital to continue to fund losses, or Wall Street cries uncle and asks to see profitability. When this happens the frailty of the model begins to appear. SAC is a little higher than expected. You met your growth target, but the projected loss was bigger than expected. Wall Street is hounding you for churn numbers, but you are reluctant to give them out. The lack of transparency then leads to cynicism, and everyone assumes the worse. It turns out that the excessive marketing spend was also propping up repeat purchase, and pulling back to achieve profitability is increasing churn. Moreover, a negative PR cycle has ensued as a result of your stock decline, and the press’ new doubts about your model. This also impacts results, and customer perception of your brand. The bottom line is that “one day we can stop spending and be remarkably profitable” rarely comes to fruition.