The main cause is that when it comes to 12TB HDDs and higher , there are only a few manufacturers like WD, Seagate, and Toshiba. However, in the case of SSDs, everyone seems to be making one—MSI, Gigabyte, Samsung, Asus, and more. With HDDs, there's no real competition based on cost or price anymore; it's more about who can reach 40 or 50TB first. who can reach 40 or 50TB first.