Maybe they shouldn't be expanding to places that lack the required infrastructure that enables them to operate their business safely. This is absolutely Uber's problem.
Your argument fails to consider the relative change in safety that Uber is bringing.
Maybe having Uber around decreases the risk to women. So even though you read about the story of one woman being raped, there are 20 others who weren't raped because they used Uber instead of using other forms of transportation (just as an example).
True, but that is a good argument on why they should also stay out of Cleveland and Detroit. Some places just aren't safe, or less safe, and no matter how careful you are you'll have a > 0% incidence rate, even barring all those who have previously been convicted of a crime (because there are always scummy people who haven't been caught yet). Uber, or whoever else enters a developing country, can definitely do things to make things "safer" than the local standard, and I'm all for that.
Maybe having Uber around decreases the risk to women. So even though you read about the story of one woman being raped, there are 20 others who weren't raped because they used Uber instead of using other forms of transportation (just as an example).