Only if they don't change it in the future in response to "market forces", or if they start charging consumers fees directly or some other workaround and then the city council has to retract this guidance because people are complaining about the higher prices.

The restaurant should get paid regular price for their food and maybe even a little extra to cover boxing it nicely for delivery, keeping it warm. The delivery company should charge the customer the price they need pay to have it delivered to them. I expect the 10% max fee if around the margin the restaurant is making so I'm not sure this fixes anything.

Food delivery is an awesome service but it costs money, consumers should expect to pay a higher right for food and grocery delivery in the long term.

And delivery companies should expect smaller margins for coordinating it.

You think all of that hasn't been tried already? Why would the delivery services leave free money on the table if it worked? Consumers would not pay those high costs in enough numbers to make it work so we end up with this model. It's a very price sensitive market.

OTOH, maybe the restaurant should get paid less for the food because the patron isn't tying up a table, isn't using the restroom, isn't consuming any water/ice, isn't creating any linen/silver/plates/glasses that need washing.