Pushing my download speed up above 900Mpbs is basically a novelty. The only thing I use that actually uses that speed in practice is my Gaming PC's Steam updates, everything else takes a herculean effort. Speed testing websites are basically reporting their own bandwidth restrictions to me.
Even with that bandwidth, torrents struggle to perform at those kinds of speeds, and everything else is pretty much going to max out around 100mbps.
I have no idea what I would actually do with 10x more bandwidth. I could theoretically fill an entire 16TB hard drive with stuff in one day, but there's not a compelling need for that, at least not for more than a single day.