Amadeus reinvests heavily in R&D, with a spend equivalent to its #3 competitor's total revenue. This creates a widening technology and product gap that smaller players cannot bridge, fortifying its market leadership and making it increasingly difficult for others to keep up.

Unlike software distributed instantly through browsers, physical AI diffuses slowly across varied industries, geographies, and machines. This makes time and longevity critical factors. Customers need a stable, long-term partner, making it difficult for new, less-established startups to compete.

As AI commoditizes software, hardware is re-emerging as a key defensibility layer for startups. A decade ago, VCs avoided hardware, but now a physical device tied to a software subscription creates powerful stickiness and justifies high valuations, representing a major shift in investment strategy.

While low Capex is generally desirable, strategically investing in capital-intensive assets like technology or equipment creates significant barriers to entry. This reduces competition by making it too expensive for rivals to enter the market, thereby protecting your pricing power and market share.

NVIDIA's annual product cadence serves as a powerful competitive moat. By providing a multi-year roadmap, it forces the supply chain (HBM, CoWoS) to commit capacity far in advance, effectively locking out smaller rivals and ensuring supply for its largest customers' massive build-outs.

To accelerate iteration and protect intellectual property, Snap manufactures its most sophisticated hardware components, like the waveguides for Spectacles, in-house in the US and UK. This co-location of R&D and manufacturing provides a competitive edge over rivals who fully outsource production.

Long before AI made it obvious, Snap realized its software features were easily copied. This early insight drove their strategy to build more durable moats by investing in defensible ecosystems (like their AR developer platform) and vertically integrated hardware (Spectacles), which are much harder to replicate.

Drawing from Verkada's decision to build its own hardware, the strategy is to intentionally tackle difficult, foundational challenges early on. While this requires more upfront investment and delays initial traction, it creates an immense competitive barrier that latecomers will struggle to overcome.

Competitors using off-the-shelf iPads failed because the hardware couldn't withstand the restaurant environment. Toast's difficult, early investment in purpose-built, durable hardware and its associated supply chain created a powerful, hard-to-replicate competitive advantage that software-only players cannot match.