Earlier quoted context omitted.
Minimum wage after all expenses (including depreciation) are subtracted seems like the absolute lowest wage that could be considered "fair". Or maybe whatever McDonald's/Walmart are paying in your area, since that is sometimes higher than minimum wage in urban markets.
this is just punting on the question. how should minimum wage be determined?
This is not how the minimum wage works currently. This is not all Uber/Lyft's feet, it's a broader problem in the economy. I understand this is more complex than Uber flipping a "fair wages" switch.