As long as storage, electricity, and network costs are somewhat in the ballpark of where they are now, and interest in eth is sufficiently high, there's no way

As long as storage, electricity, and network costs are somewhat in the ballpark of where they are now, and interest in eth is sufficiently high, there's no way around it. You can't just put something on thousands of devices, indefinitely, for low to no cost. In fact, it _has_ to be at least more expensive that whatever the cheapest highly reliable storage provider offers. Otherwise I'm going to be using everyone's machines to host all sorts. Same with webhosting, and any other kind of hosting.