Stephan's Wednesday Picks

• The hidden war over grocery shelf space (Vox)
• History is no match for Amazon in the battle for Black Friday (WSJ)
• Pusateri's U.S. expansion on hold, but Toronto food emporium still expanding (Globe and Mail)
• Why retailers could pay a price for not accepting mobile payments (K@W)
• Morrisons to revive 'much-liked' food and grocery brand (The Guardian)