I'm sure all the bigger ones had looked at the possibility before, but it's only natural to revisit it when something horrible like this happens to a competitor.
I am sure that you don't generally start with this scenario - but I have to say again that this is a common thing. People end up under cars all the time (in accidents). There is just no way anyone should excuse any company for "not considering" this scenario if their cars are on roads. I'm sure it's hard! Other industries recognize corner cases where they need to design to avoid really ugly long tail outcomes and do so with ethical rigor. Most planes do not crash into the ocean and yet you are educated on how to escape in a water landing at the start of every flight.
Note that it's not just a pedestrian ending up under a car, but the whole situation of "other car knocks pedestrian into your path, which then ends up under your car".