Can confirm, I work in the POS space and most of the restaurants we work with increase their prices to cover the comission charges from the delivery service. DoorDash has a policy that pickup prices have to match in-store (restaurants are still charged comission though), but delivery can be marked up by whatever you want.
That and the extra service fees they charge to customers (they are a lot more in the US [0]), means you can end up paying double what it would be if you got off your ass and walked down the street to order :-)
[0] https://www.restaurantbusinessonline.com/technology/uber-eat...