PSA: Fake Helldivers 2 sales on Steam are trying to scam people

Several fake listings showing Helldivers 2 being on a sale have appeared on Steam, trying to trick people into purchasing games. This is a scam attempt – the real Helldivers 2 page on Steam does not have a discount on the game. It looks like whoever controls the store pages for games called Figurality and DO NOT SMILE was able to change the complete make-up of their pages to match that of Helldivers 2, which includes the game title, developer, and publisher. Publishers listed on Steam as Fest Studio and Bside Studio appear to be behind the scams. Fest Studio is not only trying to impersonate the Helldivers 2 page, but has also changed the page of a game called Furious Rage into a fake page of Last Epoch. This one, at least, is no longer available on Steam, so there is no danger of falling for the scam anymore. Steam is probably going to deal with these cases of impersonation quickly, but this still brings concerns about security to the forefront: Why can publishers simply change their own store pages to matc