While controversial, payment for order flow (PFOF) is far more cost-effective for Robinhood's core user base making small trades. A $1,000 trade might incur 200 basis points in old commission costs versus just 1-2 basis points under PFOF. This model makes investing accessible for smaller accounts that would be penalized by flat fees.

The current capital market structure, with its high fees, delays, and limited access, is a direct result of regulations from the 1930s. These laws created layers of intermediaries to enforce trust, baking in complexity and rent-seeking by design. This historical context explains why the system is ripe for disruption by more efficient technologies.

Financial repression isn't just about forcing institutions to buy government bonds. A key, subtle mechanism is making other asset classes less appealing. For example, implementing rent controls can remove the inflation-hedging quality of property, while high transaction taxes can deter equity investing, thus herding capital into government debt.

While international markets have more volatility and lower trust, their biggest advantage is inefficiency. Many basic services are underdeveloped, creating enormous 'low-hanging fruit' opportunities. Providing a great, reliable service in a market where few things work well can create immense and durable value.

The shift to index funds was triggered not by a belief in market efficiency, but by the surprising discovery that alternative investments are highly tax-inefficient for individuals due to non-deductible fees and ordinary income, creating a tax drag of up to 20%.

Regulations like the 'Accredited Investor' rule, originally designed to shield small investors from risky ventures, are now perceived as gatekeeping. Retail investors argue these rules don't protect them but instead protect the elite's exclusive access to high-growth, wealth-generating opportunities.

Vanguard's first index fund had a ~2% expense ratio (180 bps), far from today's near-zero fees. This historical fact shows that for innovative financial products, low costs are an outcome of achieving massive scale, not a viable starting point. Early fees must be high enough to build a sustainable business.

The US banking system is technologically behind countries in Eastern Europe, Asia, and Latin America. This inefficiency stems from a protected regulatory environment that fosters a status quo. In contrast, markets like the UK have implemented fintech-friendly charters, enabling innovators like Revolut to thrive.

Jack Bogle's indexing assumed efficient markets where passive funds accept prices. Now, with passive strategies dominating capital flows, they collectively set prices. This ironically creates the market inefficiencies and price distortions that the original theory assumed didn't exist on such a large scale.