How mobile finally killed the paper brokerage.

Ten years ago, opening a brokerage account took a notary, three forms, and roughly the same patience required to buy a house. Today it takes a selfie.

The unbundling

The quiet revolution wasn't "zero-commission trades." It was the unbundling of the clearing, KYC, and funding stack from the front-end. Brokerage-as-a-service APIs let any team ship a credible app in a quarter — what used to take a regulated bank a decade.

What customers actually wanted

• Real-time prices, no 15-minute delay
• Fractional shares so $20 buys a slice of Berkshire
• Funding from the same Apple Pay sheet that buys coffee
• A withdrawal that lands the same day, not in a week

The next billion

The pattern repeats outside the US. Nigerian salaried workers can already hold dollar-denominated equity positions with three taps. Egyptian retirees buy US Treasuries from their phone. Indonesian first-jobbers DCA into the S&P. The mobile-investing wave isn't a US phenomenon — it's a global default.

The takeaway

If you're still building a desktop-first brokerage, you're not late — you're irrelevant. The default device for the next decade of capital formation is a phone.