Why are motorized three-wheelers (such as Zaranj / passenger auto-rickshaws) uniquely prone to tipping over during sharp turns?

1. Having a single front steering wheel and two rear wheels (delta configuration) creates a narrow triangular stability base with high rollover susceptibility during abrupt high-speed turns
2. Three-wheelers have too much downforce from aerodynamic wings
3. Three-wheelers are too heavy to turn
4. The engine operates only in reverse