The moat
Extreme switching costs in mission-critical databases and Oracle Cloud ERP. Installed-base pricing power. Cloud is still catching AWS/Azure/GCP on breadth, but not on the workloads that already live in Oracle.
Pain, risk, or retraining required to leave.
The product gets better as more people use it.
Patents, data, licenses, process knowledge, regulation.
Fixed costs spread over a volume rivals cannot match.
Structural ability to be the low-cost producer.
Pricing power from trust, habit, or identity.