When I do take Uber and Lyft rides, I ask the drivers how much they're getting paid, and the amounts they tell me are often 30% to 60% less than what I paid, which is a bit shocking to me.
At some point, Uber and Lyft stopped being service providers that charged riders a fee for value provided. They have become market makers that squeeze as much trading profit as possible by arbitraging the prices riders are willing to pay and the rates drivers are willing to accept. I imagine they are capturing most of the value in each ride today. It's perfectly legal, but let's call what it is.
I'm not surprised about the ride-share driver union.