Ask HN: Imagine a world with 1Tb/s internet. What would change?

For the past ~10 years, it seems like internet speeds here in the US have stagnated. Probably 80% of places I've been to or lived have been 100Mbps-500Mbps.

I'm curious what things would look like if the internet was suddenly 1000x faster.

Would there be new apps we could build? Would it enable novel use cases?