Amazon may shake up the brick-and-mortar store industry once again by opening 3,000 cashier-less Go locations by 2021, according to Bloomberg. The company’s aggressive plan puts convenience store giants like 7-Eleven and CVS at risk. The plan is in line with Amazon’s 2016 buying of Whole Foods in 2017. Since purchasing Whole Foods for $13.7 billion, Amazon has implemented a grocery delivery service in the stores for Amazon Prime users in an effort to target competitors like Instacart. Amazon opened its first Go store in Seattle in 2016. The company has since opened another store in the city and in Chicago. More Amazon Go stores are also slated to open in San Francisco and Chicago by the end of this year and into early 2019.