BitTorrent seedbox. If you are apart of a private torrent tracker you may download 5tb and upload 10tb of data per month to be in good standing within that tracker’s community
I think certain torrents being marked freeleech to not count against accounts' ratio is what causes the bulk of the imbalance in total uploads versus downloads. It's necessary too, to increase availability on torrents.
Good thing I pay only 30 EUR a month for symmetric 1 gbit fiber. Right now with BF you can find BF deals cheaper than 2 USD a month, and then there's Usenet.