>Amazon historically (and still kinda does) have a problem with getting perishables logistically to last-mile delivery points, whereas Walmart and Sam's Club have already figured this out and done it for a very long time.
I don't think getting groceries to store shelves counts as "last mile." The entire problem with last mile is that instead of delivering a truckload singular location, one is many delivering tiny shipments to scattered, irregular locations, which is substantially more time, labor, and fuel expensive, not to mention logistically more difficult.
Totally, that was poor wording on my part. Instead of "last-mile delivery points" I should have said "warehouses (or stores) where last-mile delivery shipments originate". By purchasing Whole Foods, they solved a large portion of this, but the number of Whole Foods stores still is tiny in comparison to Walmart/Sam's Club (I think, I couldn't find numbers sadly)
I don't think getting groceries to store shelves counts as "last mile." The entire problem with last mile is that instead of delivering a truckload singular location, one is many delivering tiny shipments to scattered, irregular locations, which is substantially more time, labor, and fuel expensive, not to mention logistically more difficult.