Earlier quoted context omitted.
Employers don’t keep the extra amount. If that were the case, the workers would have no motivation to work or to get the supply/demand in balance. I don’t get to “choose” how much I make. I just get to choose whether the amount of money I’m being offered per hour is worth my time.
The point is, you're not the one deciding the split. You don't think the majority of the revenue goes to you over the ride share company, do you?
Just like when I sub contract as a W2 contractor with a third party firm. I know how much I’m going to net. The higher my asking rate is the more I’m going to make and the more the contracting firm is going to make.