That's assuming the incumbents are giving the premium for those customers to the drivers.
But even if they were, the drivers are in a competitive labor market. If you get the customers with lower prices then you can also get the drivers because they'd rather be working for your rate than not at all.
But even if they were, the drivers are in a competitive labor market. If you get the customers with lower prices then you can also get the drivers because they'd rather be working for your rate than not at all.