It's not all or nothing, and no one is suggesting that the taxi commission is 100% corrupt and in thrall to Big Taxi. The way they're approaching Uber is likely

It's not all or nothing, and no one is suggesting that the taxi commission is 100% corrupt and in thrall to Big Taxi. The way they're approaching Uber is likely a compromise between kowtowing to business special interests and serving their constituents (as pretty much all policy in every country is).