Money is the biggest sign of a disparity. But it's not the only sign.
Another sign is "does each side know what they are agreeing to?" In medical industry, that concept is called informed consent. A party who is accustomed to making $150-$500/hr can afford a lawyer to understand the legal and fiduciary risk. Someone making 'Uber Salary' most certainly cannot.
Next, contracts that are discussed and hammered out usually have discussions of liabilities. "What happens if I don't do X?"; "What happens if Y happens?". Instead, Uber et. al. either do not discuss it, or sweep it under the rug, only for the end worker to be bit by it when/if it happens.
For example, accepting UBER means you should have commercial driving license by the state. You should also have insurance that covers that. And there may also be other license or tickets you need to be in compliance. UBER knows many of these laws, and they do not inform the workers of these liabilities. It is not a far stretch to see that UBER is in cahoots to subvert law and be an accessory to insurance fraud
>the law doesn't treat the self-employed/other-employed spectrum sanely, such that employer incentives don't align with social goals. We should fix that, not demonize business that optimize for the current broken system.
We already have a tool for businesses to use: hire them. Good 'ol W2 employment. They're choosing not to, and abuse a system traditionally meant for specialized temporary labor. And what are we to expect when one side has such power ($50 billion banked) vs someone who needs a job? One side is being abused.