The moat
Design wins that last a product generation, customer qualification, and (now) hypervisor lock-in. Scale in custom ASIC design teams. Not a consumer brand; an engineer’s default vendor.
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.