The end of the zero-interest-rate period compressed lending margins, but it had a silver lining. It forced fintech companies to become 'full-stack' by acquiring bank charters and building significant revenue streams from customer deposits, ultimately making their business models more durable.

Counterintuitively, the period of slower market growth was more fulfilling for Plaid's leadership. The hyper-growth 'summer' felt like just riding a wave, whereas the 'winter' demanded true innovation and customer focus, leading to a 'refounding moment' and increased product velocity.

While consumer fintech gets the hype, the most systematically important opportunities lie in building 'utility services' that connect existing institutions. These complex, non-sexy infrastructure plays—like deposit networks—enable the entire ecosystem to function more efficiently, creating a deep moat by becoming critical financial market plumbing.

SeaMoney wasn't a planned business pillar. It was born out of necessity to solve payment challenges for its own gaming and e-commerce platforms in underbanked markets. This internal tool, which started with manual cash card distribution, evolved into a massive digital lending business.

Large financial institutions, which once insisted on building all tech in-house (even email clients), have undergone a cultural shift. Humbling experiences and the clear ROI of AI have made them more open to adopting best-in-class external software, creating a huge market for B2B fintechs.

CEO Vlad Tenev considers 2022 the "refounding" of Robinhood. The business model strategically shifted from catering primarily to first-time investors to focusing on more sophisticated, resilient active traders. This pivot drove a 5x increase in product velocity (from one to five major new products per year) and built a more cycle-agnostic business.

Contrary to a popular trend among Indian FinTechs, simply adding a lending product is not a surefire way to make money. PhonePe's CTO warns that lending is an extremely difficult business to get right and is globally known for causing startups to fail.

Mercury's CEO explains that achieving profitability is a strategic decision to reassure customers. In a sector rocked by instability (like the SVB collapse), financial sustainability signals that the platform is a stable, long-term partner for a startup's core operations.

Remitly thrives by offering a service that is cheaper and more efficient than traditional players like Western Union, yet remains integrated within the established banking system. This unique position allows it to serve users' needs without triggering the regulatory skepticism faced by decentralized solutions like stablecoins.