I'm not sure that at this point we have this information.
What we understand of the business model of those ride-sharing providers is that there has been no exchange of money between the driver in the application that facilitates the matching of the driver with the passenger. The rule here does enforce that a particular system be put in place. If Uber decides to collect the money, they will remit the money to the taxi driver. If they collect the tax, they would remit it through the taxi drivers, and the taxi drivers would have to remit the tax themselves. If the web operator doesn't collect it, then the taxi drivers will have to do it themselves.