In Finland at least, and AFAIK most other European countries as well the law mandates drivers stop if they see a pedestrian about to cross the road. We have "intention to cross the road" buttons too, in some intersections with limited visibility or a lot of traffic – but by no means are you required to use them. From the looks of it crosswalks have the right of way in the US as well.

I can't really understand the assumption that people don't need to pay attention to the road because of some button. In a sensible legislation the driver is responsible for the accident even when the pedestrian is jaywalking unless they literally jump in front of the car from behind a bush or something. If the police rules you had a realistic chance to avoid the collision you, as the driver with a license meaning you've had the necessary tutoring, should be at fault.