Yep. You could classify trip requests for delivering people, goods, alcohol, medical, or perishable goods. A multitude of apps for people with cars could push or pull from the network, so at any time a driver (with a compatible app) could see nearby deliveries and their bids. Business services and apps users could post bids for delivery real time.

I mean, drivers already run Lyft and Uber simultaneously, and are now used to the idea of ridesharing.

A network, not a platform. Being platform agnostic makes a difference.

Think of it as building an ad auction network for multiple websites and advertisers, rather than just trying to build an ad network for just your own website.