So buyers should be able to see where and how their money is going to be distributed after payment. How much does the driver get? How much is he/she earning? Comparable drivers can compare metrics.
Perhaps unions could build some type of payment app and have gig workers use it as part of their employment contract?
So gig workers end up like ebay sellers with a feedback, followers and sales data on display. They can take their profile with them to new employers as well. Buyers get a profile too. Funds could also be held in escrow, and refunds granted where applicable. I don't know.