I want to push back on calling Uber's methods to avoiding regulations to be unethical, separately from discussing the wages. When they were starting, taxis had regulatory capture with their de facto monopoly. Lobbying over many decades prevented fair and healthy competition for out-of-date reasoning (like medallions and landmark tests). To break this corruption required illegal (and gray area) techniques, but I don't think it's unethical to destroy something that is unethical itself. Not all positive change can happen from following all the laws. Had they gotten shut down in the beginning, I think that would have been a major societal negative, and other ride-share companies coming on their coattails would not have happened.