I like to say that pedestrians have priority no matter what. but I don't really believe it 100% as such
What I *do* believe, though, is that, road users have a "natural right" to an area of road the size of a pedestrian and to move at the speed of a pedestrian, and that if you are taking up more space than that - either by sitting in or astride a vehicle which is excessively sized for the people it's carrying, or by moving so fast that you require a clear 'stopping distance' ahead of you, you are impinging on others' use of the highway and should be prepared to give way, slow down, or generally tiptoe around the other more considerate road users who have a smaller roadspace footprint.
Put it this way, if you were carrying a blackboard and running down a crowded street at 20mph, you would not expect everyone else to git out of your way just because you were bigger and faster. And I have seen no justifaction from vehicle users for expecting to have priority over pedestrians that doesn't come down to that belief