Doesn't this sort of thing self regulate. If there is not enough passengers, people will stop offering lifts as a primary income. If roads are full and slow,

Doesn't this sort of thing self regulate. If there is not enough passengers, people will stop offering lifts as a primary income. If roads are full and slow, people will use public transport. I realise short term there may be some negative effects on city culture and transit finances. Regulating ride shares is not very different from taxis.