Wild! I’ve got about 40 TB myself, and have never come across someone with more… let alone four times more.
40 TB was my previous capacity and based around a really cheap 2 bay NAS with a mess of external USB drives attached and no backup … and is now pretty much full.
So I ordered a 12 bay NAS (with, for now 6x 20TB disks) to bascially replace the entire old setup. I’m also planning to put the new setup in RAID 5 or 6, so it will only have an effective storage of 80-100 TB.
Just a lot of stuff. TV Shows/Series take up by far the most space. For example, just the Simpsons in 1080p (h264) takes over 500GB.