Samsung makes fast expensive storage but even cheap storage can max out SATA, hence there's no point Samsung trying to compete in the dwindling SATA space.
Does this mean that we'll start to see SATA replaced with faster interfaces in the future? Something like U.2/U.3 that's currently available to the enterprise?
Is it not fair to say 4x4 TB SSD is an example of at least a prosumer use case (barrier there is more like ~10 before needing workstation/server gear)? Joe Schmoe is doing on the better half of Steam gamers if he's rocking a 1x2 TB SSD as his primary drive.