This section is taken from the book called Four Steps To The Epiphany. A great read:

Premature scaling is the immediate cause of the Death Spiral. Premature scaling causes the burn rate to accelerate. Sales, salaries, facilities, infrastructure costs, recruiting fees, and travel expenses start cutting into the company's cash flow. The pressure for revenue grows exponentially. Meanwhile the marketing department is spending large sums on creating demand for the sales organization. It is also spending “credibility capital” on positioning and explaining the company to the press, analysts, and customers.

By the time of first customer ship, if the company does not understand its market and customers, the consequences unfold in a startup ritual, almost like a Japanese Noh play. What happens when you fully staff sales and marketing and you haven't nailed who your customers are and why they should buy your product? Sales starts missing its numbers. The board gets concerned. The VP of Sales comes to a board meeting, still optimistic, and provides a set of reasonable explanations. The board raises a collective eyebrow. The VP goes back to the field and exhorts the troops to work harder.

Meanwhile, the salespeople start inventing and testing their own alternatives—different departments to call on, different versions of the presentations. Instead of a methodology of learning and discovering, the sales team has turned into a disorganized and disgruntled mob burning lots of cash. Back in the home office, the product presentation slides are changing weekly (sometimes daily) as Marketing tries to “make up a better story” and sends out the latest pitch to a confused sales organization. Morale in the field and in Marketing starts to plummet. Salespeople begin to believe “This product cannot be sold; no one wants to buy it.” Management fires the VP of Sales and a few salespeople leave. Then a new VP of Sales comes in and starts the process all over again.

By the next board meeting, the sales numbers still aren't meeting plan. The VP of Sales looks down at his shoes and shuffles his feet. Now the board raises both eyebrows and looks quizzically at the CEO. The VP of Sales, forehead bathed in sweat, leaves the board meeting and has a few heated motivational sessions with the sales team. By the next board meeting, if the sales numbers are still poor, the writing is on the wall. Not only haven't the sales numbers been made, but now the CEO is sweating the company's continued cash burn rate. Why? Because the company has based its headcount and expenditures on the expectation that Sales will bring in revenue according to plan. The rest of the organization (product development, marketing, support) all started to burn more cash, expecting Sales to make its numbers. Now the company is in crisis mode. Here two things typically happen. First, the VP of Sales is toast. At the final board meeting no one wants to stand next to him. People are moving their chairs to the other side of the room. Having failed to deliver the numbers, he's history. Whether it takes three board meetings or a year is irrelevant; the VP of Sales in a startup who does not make the numbers is called an ex-VP of Sales (unless he was a founder, and then he gets to sit in a penalty box with a nebulous VP title).

Next, the new VP of Sales is hired. She quickly comes to the conclusion that the company just did not understand its customers and how to sell to them. She decides that the company's positioning and marketing strategy were incorrect. Now the VP of Marketing starts sweating. Since the new VP of Sales was brought on board to “fix” sales, the marketing department has to react and interact with someone who believes that whatever was created earlier in the company was wrong. The new VP of Sales reviews the strategy and tactics that did not work and comes up with a new sales plan. She gets a brief honeymoon of a few months from the CEO and the board. In the meantime, the original VP of Marketing is trying to come up with a new positioning strategy to support the new Sales VP. Typically this results in conflict, if not outright internecine warfare. If the sales aren't fixed in a short time, the next executive to be looking for a job is not the new VP of Sales (she hasn't been around long enough to get fired), it's the VP of Marketing—the rationale being “We changed the VP of Sales, so that can't be the problem. It must be Marketing's fault.”

Sometimes all it takes is one or two iterations of finding the right sales road map and marketing positioning to get a startup on the right track of finding exuberant customers. Unfortunately, more often than not, this is just the beginning of an executive death spiral. If changing the sales and marketing execs doesn't put the company on the right sales trajectory, the investors start talking the “we need the right CEO for this phase” talk. This means the CEO is walking around with an unspoken corporate death sentence. Moreover, since the first CEO was likely to have been one of the founders, the trauma of CEO removal begins. Typically, founding CEOs hold on to the doorframe of their offices as the investors try to pry their fingers off the company. It's painful to watch and occurs in more than half of the startups with first-time CEOs.

In flush economic times the company may get two or three iterations around a failed launch and bad sales numbers. In tougher times investors are tighter with their wallets and are making the “tossing good money after bad” calculations with a frugal eye. A startup might simply not get a next round of funding and have to shut down.

In Webvan's case, the death spiral was public and messy, since none of this was occurring in the intimate enclosure of a private company. The consequence of going public was that the sea of red ink was printed quarterly for all to see. Rather than realize that the model was unrealistic and scale back, the company continued to invest heavily in marketing and promotion (to get more customers and keep the ones they had) and distribution facilities (building new ones in new parts of the country to reach more customers). By the end of 2000 Webvan had accumulated a deficit of $612.7 million and was hemorrhaging cash. Seven months later, it was bankrupt.