This is a classic demonstration of the difference between bandwith and latency. As in, if you have only 1MB to tansfer, with this method it still takes a day. High-bandwith, low latency, like ship freight (as opposed to low-bandwith, high-latency air freight).
For certain values of “large”.
For larger files there is always the SneakerNet.
A padded envelope containing a dozen 16GB SD cards, sent by Express Mail (next-day delivery) has a bandwidth of about one megabit-per-second.
Networks have actually gotten fast.
This is a classic demonstration of the difference between bandwith and latency. As in, if you have only 1MB to tansfer, with this method it still takes a day. High-bandwith, low latency, like ship freight (as opposed to low-bandwith, high-latency air freight).