sneakernet is still a useful thing for large transfers (even in literal walking distance, sometimes). like if i'm sending a large file to a person in the same office or house, i might prefer to just put it on a thumb drive and hand it to them, instead of copying it to some network share or something.

i imagine this will be true for a while (i.e. the practical throughput of sneakernet in many cases will keep outpacing the practical throughput of wired and wireless networks, probably for a long time).