Sprint has abandoned its plans to launch a version of Research In Motion’s BlackBerry PlayBook tablet with an embedded 4G WiMAX radio. The nation’s No. 3 wireless carrier cited a lack of demand among business customers as its reasoning for the cancellation, The Wall Street Journal reports. “It’s an interesting concept, it just hasn’t caught on with business customers as much as they would like,” said president of Sprint’s business markets group, Paget Alves. “There are so many tablets in the market, it creates confusion for the average customer.” Sprint announced in January that it would release a 4G BlackBerry PlayBook sometime this summer, and a Sprint spokesperson told The Journal that the decision to not release the 4G PlayBook will have no impact on the carrier’s relationship with RIM.