The moat
Switching costs in CRM data and workflow. Ecosystem of consultants and AppExchange. Brand with CIOs. Sprawl has blunted the purity of the moat.
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.