I believe that the data-collection should be publicly escrowed for safety-critical research such as for autonomous vehicles, therapeutics, and so on.

It's too easy for employees to subtly edit or shape data to please their managers / directors / shareholders. It can be as subtle as "cleaning" the data by removing records with "noisy" or "unreliable" data, or "correcting" outliers.

In the Waymo case, I consider self-disclosure to be self-serving.