[DG-IDoT] Who owns the data of a sensor?

Hi all, I have a question taken from a real-life example: There is a manufacturer of a harvester. This harvester has many sensors to measure different things (e.g. humidity of wheat; quality of the ground etc.) The manufacturer sells this harvester to a farmer. Afterwards the farmer can buy a premium add-on device in order to get/see the values of the sensors. Furthermore the manufacturer aggregates these data and sells these also to other interested parties (statistics etc) My question is "who owns the data"? One point of view is: In fact the manufacturer sells the data of the farmer to the farmer. The other point of view is: The manufacture just enables an additional feature on the harvester. Thoughts ?