Who owns the data about where you eat?
“Who Controls Diners’ Data? OpenTable Moves to Assert Control,” The Wall Street Journal, March 16, 2019. “The table-booking service will block restaurants from giving competitors access to diner data acquired through OpenTable unless they pay new fees, according to its updated client agreement and a copy of a new pricing plan viewed by The Wall Street Journal.”
I guess this goes a bit to the value of information. Let’s see: the restaurant where you made the reservation doesn’t own that data, the app that provided it to the restaurant does. But you don’t.
And OpenTable seems to recognize the value of the information it has collected and, either to protect its customers’ privacy or its own profits, OpenTable has established controls and is governing that information.