stp: Economic Darwinism and Local Pharmacys

Here's an odd coincidence: National mega-Pharmacy chain CVS has recently decided to build in the TC market. Where are they building their new Saint Paul stores?

• The one on Grand Avenue is right across the street from independent pharmacy, Bober Drug
• The one on Maryland Avenue is only blocks away from long-time independent now-out-of-business pharmacy on the East Side
• The one on Snelling is only 5 blocks away from long-time independent pharmacy, Lloyd's

I'm sensing some kind of pattern, but I can't put my finger on it...