[nailer]

Perhaps because a lot of content is streamed live?

Streaming wants us to download A, B, C, D just in time.

Bottorrent (simplified) wants me to download piece P, you to download piece G, then I get P from you and you get G from me.

There are Bottorrent streaming apps but they kind of mess with the nature of BT.

OTOH things like RPM/Deb/WindowsUpdate etc it would make great sense.

[freeone3000]

World of Warcraft (used to?) patch with Bittorrent.

[pdimitar]

All Blizzard games make heavy use of BT-like technology for downloading patches to this day. It's extremely efficient. A 300MB patch to Overwatch downloading with the max speed my ISP is giving me (100 Mbps). It's a matter of 30-40 seconds.