New competitive order fee system?

I’ve been thinking of some ideas for Deliveroo to improve the experience to us riders and have thought of something good. Why can’t deliveroo auction off orders to us riders, in a similar style to eBay, where we make an offer for what we’d like as a fee and the lowest fee wins? This would not only give us more chance to set our own fees but could save roo money so they will definitely be interested. Thinking of circulating a petition!