Uber is shit because of the huge parasitic corporation behind it charging high rates and lacking a driver's cooperative behind the app and choosing/supporting the workers.
Every privatized public transport so far was an overpriced piece of shit cartel protected by the state (including taxis), owned by shady people and with many obstacles for any competition. A recipe for disaster.
Idiots have a fetish for the government, some are consciously malevolent, others are simply naive and too dumb to understand reality.
Also the idle capacity of the whole private van and bus market in some places is giant.