It’s an interesting point. In my experience traditional taxis are just as bad as ride-sharing taxis, and their ability to use bus lanes means they usually end up driving 80km/h+ through the city rather than be stuck in traffic.
I have noticed that drivers of car sharing schemes (where you pay per minute) are a bit eratic at times though. I’m not sure if that’s because they are inexperienced drivers, or just the mentality of “I need to rush, this is costing me money!”.