Your analogy is not very good. General contractors take bids, they don't set the price, they take the best offer for them. And as a sub contractor or GC you can have as many jobs open as you want. I see no similarities between uber driving and sub contracting, aside from both being task based. Contractors get to set their rate, is built into the bid process drivers don't.

Rideshare drivers are paid by the task, but that task is time-bound. Building a shed isn't. You can take on two shed contracts simultaneously, not so as a rideshare driver.

> Rideshare drivers are paid by the task, but that task is time-bound. Building a shed isn't.

Why not? You could take a contract to build a shed by the end of the day and then not have time to build any others that day.

You are not forced to make de shed.

if it's a shared car, you could pick up customers from multiple apps on the same trip?

no