It’s hard to overstate how thoroughly this move will shake up the
retail industry. Same-day delivery has long been the holy grail of
Internet retailers, something that dozens of startups have tried
and failed to accomplish. (Remember Kozmo.com?) But Amazon is
investing billions to make next-day delivery standard, and
same-day delivery an option for lots of customers. If it can pull
that off, the company will permanently alter how we shop. To put
it more bluntly: Physical retailers will be hosed.