I travel to India frequently. Before Uber (or their local variant, Ola) came along, getting a taxi was nearly impossible in middle-tier cities. The only option was an auto-rickshaw, whose drivers were notorious for gouging. And they formed a cartel: if you turned down one driver, the others would see that and refuse to give you a ride.
Uber was a god-send. You call up the driver, watch him approach on your phone, step out when he's there. Regardless of where you were, you could get a ride from there to wherever you were going. Rides for which auto-rickshaws used to charge upwards of Rs. 300 (~$4), can now be had for Rs 150 or less ( < $2 ).
I agree it has probably been a disaster for existing taxi companies in every city. But only in the same way the internet has been a disaster for the phone book companies. Or that Netflix was bad for Blockbuster.
Just because some countries don't value competition - and prefer to cater to existing entrenched lobbying groups - is not compelling evidence to the average American that Uber is bad.