From Cory Doctorow's excellent piece on gig work and minimum wage today:
In other words, Seattle's PayUp "minimum wage" has shifted some of the expense associated with operating a gig platform from workers back onto their bosses. With fewer drivers available on the app, waiting times for customers will necessarily go up. Some of those customers will take the bus, or get a livery cab, or defrost a pizza, or walk to the corner cafe. For the gig platforms to win those customers back, they will have to reduce waiting times, and the most reliable way to do that is to increase the wages paid to their workers.
I think it bears emphasizing that the unpaid time gig workers spend waiting for a job does provide value to the employer (in the form of shorter wait times), and the employee is not compensated for that value.