Many investors focus on the current size of a company's competitive advantage. A better indicator of future success is the direction of that moat—is it growing or shrinking? Focusing on the trajectory helps avoid value traps like Nokia in 2007, which had a wide but deteriorating moat.

Vanity metrics like total revenue can be misleading. A startup might acquire many low-priced, low-usage customers without solving a core problem. Deep, consistent user engagement statistics are a much stronger indicator of genuine, 'found' demand than top-line numbers alone.

In a hyper-growth market like AI, a company's revenue can accelerate while its market share simultaneously declines. If the overall market grows at 400% and a company grows at 300%, it is technically losing ground to competitors despite posting numbers that would be considered exceptional in any other industry.

To validate a startup's rapid growth, legendary YC founder Paul Graham advises asking two questions. First, is the growth based on an unsustainable hack? Second, is the total addressable market large enough to support continued exponential growth?

In a high-growth company, strong overall revenue and net retention can hide a weakening top-of-funnel. Leaders should obsess over leading indicators like new logo pipeline generation and close rates, as a decline in these metrics is an early warning of future growth deceleration.

The narrative of "0 to $100M in a year" often reflects a startup's dependence on a larger, fast-growing customer (like an AI foundation model company) rather than intrinsic product superiority. This growth is a market anomaly, similar to COVID testing labs, and can vanish as quickly as it appeared when competition normalizes prices and demand shifts.

While impressive, hypergrowth from zero to $100M+ ARR can be a red flag. The mechanics enabling such speed, like low-friction monthly subscriptions, often correlate with low switching costs, weak product depth, and poor long-term retention, resembling consumer apps more than enterprise SaaS.

While moats like network effects and brand develop over time, the only sustainable advantage an early-stage startup has is its iteration speed. The ability to quickly cycle through ideas, build MVPs, and gather feedback is the fundamental driver of success before achieving scale.

Companies enjoying high profit margins are often under-investing in their product. This creates an opening for well-funded, product-focused competitors to capture market share by delivering more value, eventually stalling the incumbent's growth.