For example, one of the major reasons for taxi regulation is so you don't have to negotiate a fare after flagging down the car. The rate is regulated so you know what it will be before you flag down the taxi, and the regulated meter gives you assurances that you're not being cheated.
This bit of regulation becomes obsolete with an Uber model: if you request an Uber ride with the app, you know you'll be paying Uber prices (and you can even get an estimate in the app IIRC). There is no need to regulate the price because consumers are empowered to do informed comparison shopping prior to the hail.
Regulations should not be imposed on a business who has made the rationale for that regulation obsolete. Other regulations may still be important though.