Im a bit Darwinistic on this, like if a system can be disrupted easily, it means there are existing weaknesses that need to be addressed (taxis vs Uber, hotels vs Airbnb).

If the established system can adapt to the disruption, then as consumers we have more choices.

If the established system dies and the disruptor replaced it (DVD rental vs Netflix), then the disruptor, despite their weaknesses, do answer the consumer needs better.

If both the established and disruptive system dies, then maybe they're not that important in the first place.