eBay doesn’t control price, product, dispatch performance or delivery time. But they will rank listing in best search based on various metrics that all comes down to the conversion rate.
A ride from Point A to Point B is the same across all drivers (same product) and people don’t care about other factors beside the price.
They will just blame the conversion rate because that is what people want.
Drivers are already willing to ride for cheap, they will do it too to get rides. There is no point in doing Uber if you get no rides, so you lower your price.
Yes eBay terminates sellers and they remove listing.
If they don’t find a way to do so they will put you in the last page and you will get no sales. That’s it.