I do not know other towns, but here in Seattle area, I often see Amazon Fresh truck in the street. Currently this service is Seattle, SFO and Southern CA only.
Now, they are making another innovation for daily shopping by Amazon Dash.
Why Amazon? You can see why from their following portfolio. They have been making significant investments to innovate their business and change the world. This philosophy is same as "Sankata Yoshi" which is very famous Japanese business philosophy.
Personally, I do hope that the people are smart enough to balance out with local shopping at their market; e.g. march.

