They're not fast enough, and disks aren't free. People don't have just a few bytes that they'd like to store content-addressed. We have, as a commons, about 3-

They're not fast enough, and disks aren't free. People don't have just a few bytes that they'd like to store content-addressed. We have, as a commons, about 3-4 PiB of https://news.ycombinator.com/item?id=21752320data https://news.ycombinator.com/item?id=21752320data to store, at a minimum. This data cannot possibly live in one place, it cannot possibly be checked all at once, and it cannot possibly be enumerated or searched. These all operate over the existing Internet, by the way. There are proposals like NDN [0] for doing something different from TCP/IP, but odds are good that we don't need NDN, we just need less bad content-addressable systems. I suspect that we'll need either a compression revolution, or an ISP revolution, in order to get more speed. It doesn't seem like existing distributed systems can improve on their use of local CPUs much more. [0] https://named-data.net/ https://named-data.net/