I love this. At least in the US, ophthalmology & dentistry seem ripe for disruption/improvement as they have some really strange rules yet 90% of people's interactions with them are very routine.
Completely agree, and I would attribute some of this to excellent marketing. Lately I've been thinking about how so much of our behavior and societal/cultural norms (e.g. bacon and eggs are breakfast food! drink milk to prevent your bones from crumbling into a million pieces!) all come down to brilliant longform marketing efforts.