https://en.wikipedia.org/wiki/Feist_Publications,_Inc.,_v._R....
Feist is a case where a phone book company stole the data in a phone book, and began reselling it. It deals with publication of facts, and is a situation where there's a reasonable public policy argument for incentivising the private company's work collection of phone number data. It's a commonly taught fundamental Copyright claim that is a great starting point for those interested in researching further.