I've wondered about this as well. Different places seem to have different escalator speeds. It's been a while since I last saw someone who was too afraid to get

I've wondered about this as well. Different places seem to have different escalator speeds. It's been a while since I last saw someone who was too afraid to get on an escalator, but I do frequently unsteady elderly folks who struggle a bit. I guess that's the demographic that's preventing faster escalator speeds.