I have many issues with Uber as a corporation - their treatment of customers, employees and drivers. But with case law, I have concerns for the precedent this sets.
Ruling drivers as employees risks removing scope for a ridesharing services entirely, and locks ad hoc transportation to the old inefficient taxi system.
With personal vehicles sitting idle, I do think there should be scope left for some platform for drivers to offer services at any price at any time if they feel it is worthwhile. It increases mobility across the spectrum, and allows for better allocation of resources.
I think the bigger issue is why Uber has so much leverage to control the pricing and terms of drivers in the first place, and why there aren't more alternatives to force them to be competitive.