I think the reason Uber/Lyft are especially vulnerable to this is because they present an easy target for politicians who are being held responsible for a crime

I think the reason Uber/Lyft are especially vulnerable to this is because they present an easy target for politicians who are being held responsible for a crime in the area. Its much easier for politicians to respond to such a crime with "we're banning taxi apps" rather than identifying and tackling root causes. Case in point - when an Uber driver raped a woman in Delhi, this is exactly what the Delhi government did.