I didn't say they would be eager to do that, but I would hope they would understand why it might be a long term loss to hoard data that makes roads safer. One

I didn't say they would be eager to do that, but I would hope they would understand why it might be a long term loss to hoard data that makes roads safer. One answer is that they might have to in order to be allowed to operate. Since operating a private service on public infrastructure is not a right, it is perfectly reasonable to require that companies share their data especially when that data relates to safety. Getting run over by a Tesla in an unmarked, but legal, crosswalk that Waymo knows is frequently used, and should be crossed with caution is not desirable under any reasonable model of capitalism and competition. You can also make the case that if you want ANY autonomous driving to be commercially successful, you need to make sure that ALL autonomous driving is safe. Up to date maps of where the squishy humans are likely to be is a great way for all players to ensure that a single incident doesn't set back the entire industry. A Tesla running over a pedestrian isn't a win for Waymo. Basically my feeling is that it is perfectly reasonable to require companies to share their data about the location of sidewalks and other infrastructure in exchange for getting to use public property. It benefits everyone, and is likely to have little to no impact on their competitiveness.