It is common for retailers to stock low-spec parts, but that doesn't mean that there is no market for the higher-end stuff. Another example is routers: hypermarkets often only stock 10/100MB routers, and a gigabit router has to be ordered online from somewhere. But of course there are plenty of people with gigabit fiber connections who do a lot of torrenting or have a whole family using the connection who would benefit from ordering a gigabit router.
FWIW, I filled an 8T hard drive and then a 4T follow-up hard drive in just one summer of torrenting. Full-size Blu-ray rips are large, and the canon of great cinema is vast. Sure, it'll take me many months afterwards to watch everything that I have downloaded, but these large hard-drive sizes are well within the bounds of what a cinephile with a home theater building a collection would need, and they definitely just aren’t for large businesses. Of course, the hard drive discussed in the linked article is something else entirely.
FWIW, I filled an 8T hard drive and then a 4T follow-up hard drive in just one summer of torrenting. Full-size Blu-ray rips are large, and the canon of great cinema is vast. Sure, it'll take me many months afterwards to watch everything that I have downloaded, but these large hard-drive sizes are well within the bounds of what a cinephile with a home theater building a collection would need, and they definitely just aren’t for large businesses. Of course, the hard drive discussed in the linked article is something else entirely.