Disclaimer: I've driven both taxis and uberX in Sydney
UberX is cheaper than taxis, easy to use, and trackable on your smartphone as the car approaches - ooh what an age we live in.
As well as the cool factor to have some hipster pick you up in their late model Mazda 3 hatch, I think price is the main driver for the rapid rise in UberX.
Taxis are relatively expensive, but it's wrong to label the taxi industry as a monopoly because they have no control of the price as it is set by the state government.
Taxis have higher costs, the main ones being:
$32,050 p.a taxi plate lease
$7,620 p.a network subscription (eg taxis combined services, manly cabs, apple. silver service is over 8000 - dbz)
$6277.92 p.a CTP insurance
$4200 p.a taxi comprehensive insurance
$1800 p.a work cover insurance per driver
This is more than a $50,000 advantage that uberX has over taxis.
From my understanding, UberX is still an illegal service in all states in Australia but it's hard to enforce the law because uber simply bans the uber accounts on law enforcement agents.
In terms of safety, uberX and taxi drivers have criminal checks done, but taxi drivers are more stringently checked more regularly.
So what proportion of the ozbargain community catches uberX instead of taxis?
Anyone who is anyone has a car.