The idea of them being bought from some standing order setup on some ipad screen for them to just arrive and be placed into the kitchen is just mind-blowing. I don't know if I could live like that.
In the future houses will have kitchen cupboards that can be opened from outside, probably with some steel shutter/garage door type of arrangement. You probably won't even have to have Mr delivery man step in the house, he will back fill the cupboards and even take away any out of date items for you.
Now all you need to do is buy a robot that feeds you and open a hole in your couch to put a toilet in.
But seriously, people need to get out, see the 4-5 types of tomatoes and buy the right ones. Your version works for a subsection of people, most will plan grocery shopping on their way back from work or as family time. you can buy the shampoo and Gillete razors once every few months, but for many things can't beat the 'see, touch and buy. '
You know what we never have to do? Spend more than 5-10 minutes shopping for two weeks' worth of groceries. I don't even leave the couch, and when the delivery person shows up, they take the bags right into the kitchen.
Totally acceptable.