Isn't Linux the most deployed OS in industry (by practitioners)? Are the Linux hyperscalers hiding their FS secret-sauce, or perhaps the "aesthetic ideal" filesystems available to Linux good enough?
I imagine the hyperscalers are all handling integrity at a higher level where individual filesystems on single hosts are irrelevant to the outcome. In such applications, any old filesystem will do.
For people who do not have application-level integrity, the systems that offer robustness in the face of imperfect storage devices are sold by companies like NetApp, which a lot of people would sneer at but they've done the math.
