Someone building their own probably isn't too afraid of missing out on a webgui or installing something like FreeNAS or whatever is the popular choice these day

Someone building their own probably isn't too afraid of missing out on a webgui or installing something like FreeNAS or whatever is the popular choice these days. I think the NAS market is in for an upheaval due to the markups for fairly crappy hardware and then squeezed from the bottom by cloud storages. RPI 5 can be got with 16gb of memory and has a PCI-E port, some might complain about the lack of ECC ram but does all those cheap ARM cpu's on lower end NAS'es really have that? I think the biggest factor might be that case manufacturers haven't found it to be a high enough margin, but it only takes one to decide that they want to take a bite out of the enthusiast NAS market.