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.

Founder Thomas Peterffy, a programmer by trade, instilled a culture of extreme automation. This tech-first DNA allows IBKR to operate with SaaS-like efficiency and margins (75% pre-tax) superior to even Visa and Meta, despite being in the competitive brokerage industry.

Unlike platforms attracting novice traders who often lose money and churn, IBKR's target is the sophisticated investor. This creates a natural growth funnel where successful traders "graduate" from simpler platforms like Robinhood, seeking IBKR's lower costs and advanced features as their needs and capital grow.

Startups often fail by making a slightly better version of an incumbent's product. This is a losing strategy because the incumbent can easily adapt. The key is to build something so fundamentally different in structure that competitors have a very hard time copying it, ensuring a durable advantage.

The decision to offer zero-commission trades was not an incremental price reduction; it was a fundamental shift in the business model. The team intuitively recognized that "free" possesses a unique marketing power far stronger than a nominal fee. This is key for any company aiming for mass-market disruption.

While often cited as a weakness, Interactive Brokers' complex user interface effectively filters out casual traders. This self-selection attracts sophisticated, high-value customers who prioritize low costs and advanced functionality over a slick user experience, creating a more durable client base.

Newbrook frames its strategy as providing a customized 'Gulfstream' experience for taxable investors, while large alternative firms sell a mass-market '777' product optimized for tax-exempt institutions. This highlights how smaller firms can thrive by creating a superior, tailored solution for a valuable niche market.

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.

Top compounders intentionally target and dominate small, slow-growing niche markets. These markets are unattractive to large private equity firms, allowing the compounder to build a durable competitive advantage and pricing power with little interference from deep-pocketed rivals.