I think the cancellation fees uber in particular charges are bullshit and I always dispute them with the credit card if uber doesn't give me credit. Every single one has been for a driver taking a trip that's way too far away, estimated wait time of two to three minutes becoming ten to fifteen minutes or more. If the driver who knows they are taking this trip and won't get there for over ten minutes but the eta is three minutes, why should I pay a cancellation fee when I finally cancel after waiting five minutes? That is total bullshit. Often the driver hasn't even finished his previous trip. I don't know whose fault it is, the driver's or uber's. The software should not allow a driver to take a trip with a short eta knowing that it'll take four or five times longer, sometimes before he even finishes his previous trip, but since it does, the driver should be aware of how far away he is and not take a trip he knows he's going to be way over the eta for. In this scenario, everyone loses.