Have you ridden Uber? I have used it regularly for a year now in many cities in the US and in Europe.
The story is nearly the same in every case, whether talking to the black car drivers, or the UberX drivers. All claim a better working experience and more personal income. Just hop in an Uber car and take a second to ask them. Almost all are former taxi drivers who got sick of driving for the taxi companies.
Be careful though. When you ride Uber, you probably will never look back to taxis if you can help it. The experience in service is superior.