to concede anything. Then in February 2017, Amazon again began to block preorders of Disney films, just before Moana and Rogue One were due to be released to the home market. The law firm Hagens Berman filed a lawsuit in district court in New York in January 2021, alleging that Amazon colluded with leading publishers to keep e-book prices artificially high. The state of Connecticut also announced it was investigating Amazon for potential anti-competitive behaviour in its sale of e-books. Removal of competitors' products On October 1, 2015, Amazon announced that Apple TV and Google Chromecast products were banned from sale on Amazon by all merchants, with no new listings allowed effective immediately, and all existing listings removed effective October 29, 2015. Amazon argued that this was to prevent "customer confusion", as these devices do not support the Amazon Prime Video ecosystem. This move was criticized, as commentators believed that it was meant primarily to suppress the sale of products deemed as competition to Amazon Fire TV products, given that Amazon itself had deliberately refused to offer software for its own streaming services on these devices, and the action contradicted the implication that Amazon was a general online retailer. In May 2017, it was reported that Apple and Amazon were nearing an agreement to offer Prime Video on Apple TV, and allow the product to return to the retailer. Prime Video launched on Apple TV December 6, 2017, with Amazon beginning to sell the Apple TV product again shortly thereafter. Amazon is known to remove products for trivial policy violations by third-party sellers that compete with Amazon's home-grown brands. To compete for product placement where Amazon's own brands are featured prominently, third-party sellers often need to resort to advertisement spends and list themselves with Amazon's expensive Prime program for which they are charged a premium on order fulfillment and returns, resulting in increased costs and lower profit margins. Amazon has since suppressed other Google products, including Google Home (which competes with Amazon Echo), Pixel phones, and recent products of Google subsidiary Nest Labs (despite the Nest Learning Thermostat having integration support for Amazon's voice assistant platform Alexa). In retaliation, Google announced on December 6, 2017, that it would block YouTube from the Amazon Echo Show and Amazon Fire TV products. In December 2017, Amazon stated that it intended to start offering Chromecast again (which it would do a year later).