People forget that the reason these services showed up in the first place was that ordering from restaurants was an absolute mess. Most of them don't have websites, and if they do it likely doesn't work on phones. Menus are outdated or non-existent. Few of them have online ordering systems. There is no way to securely share credit card info. Phones are always busy. There is no way to know their hours, whether they deliver in your area, how long they will take. No way to easily customize or track your order. Delivery is slow and unpredictable (if they even offer it).
As the article itself states, restaurants don't like using these services but support them regardless, because the alternative is no orders.
As the article itself states, restaurants don't like using these services but support them regardless, because the alternative is no orders.