I'm not convinced. I am surprised to hear it has worked anywhere.
I'm not a gourmet cook by any stretch, but I do cook most of my own meals. I would never buy fresh ingredients online. Shopping for the ingredients, perusing the choices and selecting "the best" unblemished fruits, vegetables, and meats is part of the experience of cooking. I don't want to have someone else or some robot do it and dump it on my doorstep. When I don't care, I just go to a restaurant, which will be cheaper and faster than a service like this could possibly be.