This week the supermarket world was struck by the news that the market research firm dunnhumby ranked Amazon BB #:283186 as number one in its 2020 retail preference index. “Amazon is a formidable competitor in virtually any category it pursues, and I expect that it will build on the momentum from 2020 and continue to become an even bigger player in grocery,” says Mark Ryski, Author, CEO & Founder of HeadCount Corporation.