Earlier quoted context omitted.
I'm torn too, but the meter thing is a very sensible point. Taxi meters in NYC (the only market I have experience with) are basically entirely locked boxes- the drivers can't do anything beyond poke the buttons on the front. This is, of course, very sensible- otherwise there's a danger of unscrupulous drivers modifying their meters to charge passengers more. This is only the case for yellow cabs in NYC, though- I'm s…
About taxi meters: from my experience, the mileage may be fixed, but it always seems that the cab driver is able to press something/manipulate the box somehow when they need to add additional fees (in Boston, specifically, in fact). For instance, when I get picked up at many airports the cab driver adds some additional fee (usually between $3 and $8). For all I know, they're just making this number up - how would I k…
Even if the user doesn't know the actual airport fare and the cabbie manages to scam a few riders unfamiliar with the true fare schedule, a tampered-with giant human-readable fare schedule is pretty easy for an inspector or frequent rider to detect and report.
Plus, as the user pays the cab driver on the way out, there's an opportunity for the user to review the charge and reject payment if the driver is scamming them.
With Uber, the payment takes place later and an e-mail receipt is sent, and the fares are seemingly intentionally obfuscated (see: the controversy about displaying peak v. off-peak pricing as a multiplier rather than a dollar amount). Hence, a driver using a malicious Uber Driver app to report a few more blocks travelled on each trip is much less likely to be detected than a cabbie physically and obviously entering additional fees. I suspect Uber would find it difficult to prove that the driver's (fake) extra mileage wasn't actually rider-requested or an attempt to circumvent traffic - and I also suspect most riders won't notice.
Regular cabbies try the obvious, physical "take the long way" scam often enough that I suspect a hard-to-track digital form of the same idea isn't far off.