New wine and old wineskins. Sharing economy between global platforms and local regulations.

The idea that the innovations of the so-called sharing economy should not be regulated seems to have been overcome.
The real issue, however, is who should discipline these new phenomena and under what conditions.
Until now, the adoption of local regulations has prevailed over supranational or national ones.
Can this be the best solution, or will a global approach be indispensable on the horizon?