For public organizations we already have legislation that obliges them to publish their data (or at least we're getting there, like currently in Germany), so it

For public organizations we already have legislation that obliges them to publish their data (or at least we're getting there, like currently in Germany), so it wouldn't be so difficult to take this and adapt it for private companies. And sure cleaning and publishing this data would take effort, for which one could compensate the companies though. And as there is often just no way for the public hand to generate this kind of data, I think we will definitely see some legislation in this area very soon.