I agree that no one should ask who shops Italian Garden, Darden restaurants, Arby's, or any other specific client. Responding to that would be an ICA violation. If Arch's request were more specific, for example, "who the the hearing aid shops in Stanford, MA, that pay for a hearing aid and require you have 3 objections?" that would require a violation to answer.
Asking who does hearing aid shops or who does grocery stores or who does hardware stores is not a violation. There are many MSCs that do all of those types of shops and they vary by location.
CANADAMOMMY, I share your annoyance with those who ask for ICA violations. I even object to thinly veiled ICA violations, like using cute names that everyone will recognize for a client when naming the MSC. Arch has gotten around that by carefully working his request. We get that you are irritated at Arch and at his question, but IMHO this is not a violation.