Well since there's no-requirement for it to be national then, I'd point out that in the D.C. area there are 2 major chains that delivery groceries, and 3 others

Well since there's no-requirement for it to be national then, I'd point out that in the D.C. area there are 2 major chains that delivery groceries, and 3 others that allow online ordering and pickup at select stores. It's been done for at least 5 years.