I think the problem is a general one about drivers, not just ride-sharers. I live in a fairly busy area and I am beset by aggressive drivers any time I need to cross a busy road. So many drivers simply ignore pedestrians by default. Not that many of them have Uber or Lyft signs in the window, if anything commercial drivers tend to be a bit more careful in my experience because the downside risk is being unable to work any driving job.
About half of commercial drivers is my conclusion. (though I'm not collecting statistically valid data) Just judging by the number of commercial vehicles who drive into the crosswalk I use often.
