I wonder if that's a consequence of the "gig economy" working in the wrong direction. Perhaps the relationship should be between the delivery service "gig fleet" and the restaurants themselves. The ratings and feedback information would actually be more useful and would allow different restaurants to post different contract rates through the service based upon these ratings.

That would actually provide a service that doesn't dilute their brand. As it is, these restaurants have just found a way to counter this negative outcome by diluting this third party marketplace itself.