Unless of course they don't want to be paid for it, and the service gets in the way of them returning it to you immediately for free just so they can charge $15 that they get a cut of ;)
If you read the posted link, you would see that the fee is entirely sent to the driver.
And if you read the other comments, you would see that direct communications can be abused so this current process is likely the best compromise to help both riders and drivers.
And as stated before, many drivers return items immediately for free while many others probably don't find items until days after the original rider reports it, so there are vastly different scenarios under which you need a process to work.
Is the tiny detail of whether the driver can set the exact fee really that important?
