The stickiest software is critical but inexpensive relative to a customer's overall budget, like payroll services. This 'Goldilocks zone' makes the software too small a cost for C-suite review, yet too embedded to easily replace, creating a powerful moat.

In an environment of AI disruption, the most durable software businesses are vertically integrated into critical sectors like finance or healthcare. Furthermore, companies with usage-based pricing models are more resilient than those with seat-based models, as their revenue is tied to utilization, not just headcount.

To win as a low-cost service provider, every decision must be optimized for operational efficiency from day one, like offshoring talent and using heavy automation. Simply lowering prices because a premium model failed is a losing strategy, as the underlying cost structure is fundamentally different.

Industrial gases are essential for manufacturing, making failure catastrophic for customers. However, they only represent 1-2% of a customer's total costs. This combination of high failure cost and low relative spend creates an extremely sticky customer base with very low price sensitivity.

High margins create stability but also invite competition. The ideal strategy is to operate with margins low enough to build customer loyalty and a competitive moat, while retaining the *ability* to raise prices when necessary. This balances long-term growth with short-term financial resilience.

To combat renewal fatigue, DaaS vendors must guide customers to a single, measurable business win within the first 60 days. This aggressive timeline forces prioritization of the most tangible use case, creating an "anchor point" of proven value that makes future renewal conversations significantly easier.

A powerful mental model for durability is the "thermonuclear event test." If 99% of humanity were wiped out and currencies were worthless, would people still want your product? This identifies businesses with fundamental, inflation-proof demand, separating them from those dependent on fragile economic systems.

True defensibility comes from creating high switching costs. When a product becomes a system of record or is deeply integrated into workflows, customers are effectively locked in. This makes the business resilient to competitors with marginally better features, as switching is too painful.

Buyers pay a premium for predictable income, not just high revenue. Even non-SaaS businesses, like a home builder, can create valuable "durable revenue" by adding contract-based services like lawn care, significantly increasing enterprise value.