Apple's mobile chips have been consistently the best in the business. When the A14 was released, the second fastest mobile chip you can buy became... the A13.
Is this unsurmountable? Obviously not, it's excellent engineering, not a pact with the Devil. But you can't just hand-wave it away either, Apple's silicon is the one to beat, and they have a head start.
You can only run Apple’s awful software platforms on Apple Silicon so they’re only competing with themselves and for the few people who actually run macOS in the case of the new Macbooks.
Even if the rest of the PC industry never goes to ARM, Apple’s market share won’t change more than one measly percent IMO.
