The moat
Irreplaceable parks (efficient scale + brand) and a character library that prints merchandising and ticket demand. Network effects in streaming are weak relative to Netflix. ESPN is a shrinking tollbooth.
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.