Retailers sell on Amazon to increase sales, yet worry Amazon will use their data to compete

Protective of hard won data, online retailers and marketers are viewing Amazon as both important for visibility and profitability, but also see Amazon as potential competition. 
A report by  e-commerce solutions provider SLI Systems found that around the world, retailers, who have a mix of business size and models, including pure e-commerce and omnichannel merchants, worried that despite the potential for more sales, Amazon could also use their sales data to compete directly with