Dropbox designer name dropped "64-of-96 RS encoding" as if they're the only person that's heard of, or dealt with Reed-solomon encoding before, and expected the author to get scared off. There is, in the case of drop box, plenty of ground to crush Sia into. That is the ground between the 95% and multiple-nines of availability.

Engineering is about tradeoffs. I could build a network as good as Google's with infinite money, infinite time, and infinite help. I could design a product as beautify as Apple's with the same lack of limitations. Unfortunately for me, I have limited money, limited time, and limited help. Every systems designer understands that, innately, so isn't rushing out of the woodword because Sia and Dropbox have merely chosen different tradeoffs. That one has IPO'd is uninteresting in the abstract. It's just money after all.