We made it a national issue, not just a city issue.
When we are planning the deliberation, UberX was only operating in Taipei. Since that time, UberX had expanded to cities around Taiwan, making it harder to reach binding consensus.
However, the current result is also more scalable, so for other cities, I think it is essential to reach a state-level consensus; it will work better if the result stays constant across elections.
For EU states, it may be useful to agree on the EU level, too. The “European agenda for the collaborative economy” is a good checklist to start with, but implementation will depend on each member state.
If an implementation is generally accepted at parliament level, it will discourage lobbying in individual cities.