Amazon is global in theory but successful in only a few places.
For comparison, 15 per cent of Facebook's daily users, and almost half its revenue, came from the US and Canada last year.
The growth is likely driven by customers who are visiting Whole Foods stores to pick up purchases from Amazon Lockers. Still, any new visit to the store carries the possibility of a purchase.
Amazon has also focused on this fast kind of store visit with convenience-focused initatives like Amazon Go.
Just last month, grocery store stocks plunged when news arrived that Amazon planned to acquire trendy, upscale grocer Whole Foods. Then Amazon struck again late last week, with home improvement stores taking the hit.
