[dwaite]

> It's particularly frustrating as a paid app just up and disappeared.

Didn't they give two year's notice?

> Is there an instance where Apple listened to customer feedback on a scale of less than a decade?

Is there an instance of them taking a decade?

Five years, for sure. See butterfly keyboards - people could hate it, it could have more widely reported failures but they can't replace it without revising the whole laptop's design (which they do every five years).