Indeed, and that's an extension of "if it were the only source of income for Uber". If Uber proposed too high a spread, it's Uber that should be penalized. IOW

Indeed, and that's an extension of "if it were the only source of income for Uber". If Uber proposed too high a spread, it's Uber that should be penalized. IOW it's not the spread mechanism that's wrong, it's everything on top of it.