Earlier quoted context omitted.
To a first approximation, I can't really see why Place and Pay should be illegal. It's basically paying the neighbor kid to go pick up some dinner for you, writ large. It "competes" with any delivery service a restaurant runs, but if the restaurant offers takeout at all, it's hard for me to see why the market should care who is doing the taking out.
To me it gets 'shitty' when they do this without disclosure. I have no problem with placing an order with GH and having them place the order for me, but when they masquerade as the restaurant and try to hide that from the customer is where the problem comes in.
Last month the grilled chicken place gave me chicken which wasn't grilled. I called them (they have a national call centre), and the store manager called me shortly after, to apologise. Following day they sent me chicken.
Last week I was at a pizza place at night. An angry customer called, they got the other wrong. I listened to the store manager for about 4-6 minutes trying to explain that this was the 3rd-party service that got it wrong.
That service doesn't have an agreement with the store/chain, as they have their own delivery service.
Is the extra admin worth it? I don't think so. It's unethical behaviour from the tech companies.