Amazon CEO Jeff Bezos on October 02, 2019.Elif Ozturk | Anadolu Company | Getty ImagesAmazon restricts a few of its greatest machine rivals from shopping for commercials tied to look outcomes for its personal merchandise, giving its gadgets a bonus over rivals, a Wall Street Journal investigation has discovered.The corporate will not enable some machine makers to purchase sponsored advertisements tied to merchandise made by Amazon, together with the voice-activated Echo Present, Ring Doorbell and Hearth TV, regardless of permitting them to purchase advertisements tied to different rivals’ merchandise on the location, the Journal mentioned.Sponsored merchandise on Amazon are keyword-targeted advertisements that permit advertisers promote sure objects. To get the sponsored label, advertisers bid on sure phrases, and advertisements with larger bids usually tend to be displayed.Amazon mentioned in a press release that it disputes the Journal’s findings however acknowledged that some key phrases associated to Amazon gadgets may have restricted promoting stock. The corporate mentioned such limitations are an instance of outlets deciding what merchandise to advertise or characteristic on their web site, which it mentioned is commonplace apply. Amazon added that it is potential the businesses are bidding for advertisements and do not win the bid. “Information flash: retailers promote their very own merchandise and sometimes do not promote merchandise of rivals,” Amazon spokesperson Jack Evans mentioned in a press release. “Walmart refuses to promote Kindle, Hearth TV, and Echo. Shocker. Within the Journal’s subsequent story they are going to uncover playing in Las Vegas.”The probe discovered that Roku, which competes with Amazon’s Hearth TV, hasn’t been capable of purchase advertisements tied to each Amazon’s gadgets and its personal merchandise for a number of years. Roku search outcomes on Amazon’s web site usually displayed advertisements for Roku’s rivals, Roku merchandise supplied by resellers and promoted advertisements for Amazon’s Hearth TV close to the highest of search outcomes, the Journal mentioned.Roku declined to remark.Different rival machine makers skilled comparable points shopping for sponsored advertisements on search outcomes for Amazon’s merchandise, together with Fb, which makes voice-activated good shows that compete with Amazon, and Arlo Applied sciences, which makes good safety merchandise that rival Amazon-owned Ring’s good doorbells.The actions might appeal to consideration from regulators who’re already inspecting Amazon’s enterprise practices.The Journal discovered that members of Amazon’s gadgets group flagged merchandise from bigger rivals, known as “Tier 1 Opponents,” to dam them from shopping for advertisements on Amazon’s personal merchandise. Moreover, when Amazon’s gadgets group launches a brand new product, workers are charged with figuring out which key phrases to suppress in promoting and are instructed to debate these issues in emails labeled “privileged and confidential,” with the intention to stop regulators from accessing associated emails, the Journal mentioned.Amazon instructed CNBC that workers are solely instructed to mark emails as privileged once they’re looking for authorized counsel.Amazon faces ongoing probes in Europe and within the U.S., the place the Home Judiciary Subcommittee on Antitrust has examined how Amazon makes use of knowledge from third-party sellers to create private-label merchandise. Amazon’s rivals have beforehand accused the corporate of utilizing predatory pricing practices to suppress rivals.Learn the total story from The Wall Street Journal.— CNBC’s Megan Graham contributed to this text.