I think the headline is a bit optimistic, saying that Samsung & sandisk should be worried. The issue with 128, 64, 32, and even 16TB SSDs is that most enterprises tend to not buy large amounts of them. NAND is so expensive that massive drives like that come with an incredibly high TCO, which businesses dislike. Not to mention the fact that, although still fast, massive SSDs tend to be highly bottlenecked by their architecture.