In the sharing economy, companies like Uber, Lyft, and Airbnb, add value by using resources that would otherwise be idle. The Internet connects people who need transportation or accommodations with people who are willing to provide them. Another substantial advantage is that these same connections permit social norms rather than government regulation to enforce standards of good conduct.
Government has a model for regulating taxis. It generally requires substantial licensing and enforces rules by tracking complaints and disciplining drivers found in violation. But a company like Uber makes much of this regulation unnecessary. First, given its substantial capital investment, it has every interest in checking out drivers itself before it permits them to represent its good name.
But Uber also makes use of social media to assure continuing good behavior of its drivers.