At those speeds, its nice to start thinking about decentralization. At a GB speed, your network is about as fast as a typical HDD. So whatever you store on an HDD can now be twice as fast to load if your friend has the same thing.

It would actually be way better, than HDD, because you could do smaller requests. Hard drives take about 10ms to respond to a random access. Your friends could have the thing on SSD or even cached in memory. So you'll get a significant speed up.

1gb is a luxury. It feels like the entire Internet is running in your localhost. 4k streaming is clear and smooth. None of these is essential but it's nice if it's available to you for a little extra.