@maryjmays: How do they do this?

Reed Reding :

Lewis Black has a bit about a similar experience, except those two Starbucks were directly across the street from each other.

Jordy :

Starbucks, and other chains, do this intentionally. it often leads to more than double the business.

Tom :

Ones probably licensed to the hotel not actually ran by Starbucks

patty :

Here in Saint Augustine, Florida we have a Publix across the street from a Publix literally

Nougat Manuel :