§ 08 · SECTOR DEEP DIVE · 8 PLATFORMS
Fintech & Payments
Network rails to checkout buttons. Lock-in hierarchy from maximum to commodity.
8
Platforms
4.23
Mean B
3.27
Median B
8/8
Above B = 1
Key Structural Finding
Fintech lock-in hierarchy is precise: network rails (Visa/MC) > developer infra (Stripe) > primary banking (Nubank) > merchant POS (Block) > commodity checkout (PayPal). PayPal's decline illustrates structural erosion when substitutability rises. Nubank's $68B is justified by deepest personal financial lock-in: being someone's only bank, only credit card, only savings account.
Sector Rankings — Visa (8.82) to PayPal (1.14)
| # | Platform | Ticker | Mkt Cap | Capture | Escape | B | Zone |
|---|---|---|---|---|---|---|---|
| 01 | Visa | V | $579B | 2.15 | 0.24 | 8.82 | BLACK HOLE |
| 02 | Mastercard | MA | $462B | 2.00 | 0.25 | 8.14 | BLACK HOLE |
| 03 | Nubank | NU | $68-72B | 1.80 | 0.34 | 5.21 | BLACK HOLE |
| 04 | Stripe | Private | $159B | 1.61 | 0.44 | 3.67 | BLACK HOLE |
| 05 | Revolut | Private | $75B | 1.31 | 0.46 | 2.87 | BLACK HOLE |
| 06 | Block (Square) | XYZ | $39B | 1.27 | 0.45 | 2.81 | BLACK HOLE |
| 07 | Robinhood | HOOD | $64B | 0.72 | 0.62 | 1.16 | TRANSITION |
| 08 | PayPal | PYPL | $42B | 0.72 | 0.64 | 1.14 | TRANSITION |
B-Index Distribution
Mean Parameter Profile
Capture Escape Extended