Traditionally, when working two part-time jobs, you aren't typically doing both part time jobs simultaneously. Like, you cant be doing counter-duty at Starbucks 10am-1pm while also be pumping gas across town at Exxon 10am-1pm -- instead you'd have to have shifts w/o overlap. Each company is responsible for paying a fair wage for their shift.

With Uber and Lyft, most drivers I've seen are on both apps simultaneously and choosing the best ride that pops up, which makes the standard interpretation obsolete for gig jobs like this which allow for parallelism.

While I support good wages for drivers, it is unclear who pays the good wage -- Uber, Lyft, or both, or half each, or some proportion as you clock-in-clock-out constantly. I'm sure there is a good answer that is fair to the driver, but I haven't heard it yet.