Apparently there is a problem in Las Vegas with cabbies intentionally taking long routes in order to overcharge. This article explains the various Rube Goldberg schemes the government has regulated to try and control this practice. As you would expect, they are so complicated and cumbersome that they have proven completely ineffective in stopping the practice.
The Uber rating system, 1-5 stars, entered immediately after a ride would stop this immediately. But Uber is currently banned in Nevada under the guise of protecting the consumer.
Cabbing in Las Vegas is a pain. There are long line at the airport to get a cab and often even longer at the hotels.
I think I will boycott Las Vegas until Uber is permitted to operate.