[btym]

Such a compression algorithm could make it much cheaper for the community to volunteer capacity to the network (short-range relays? data storage nodes? crowdfunded cell towers?), which could make it much more feasible to build a reliable P2P network.

[hk__2]

If this were true, there would be much more P2P networks today than fifteen years ago, but that’s not the case. According to [1], in 2004 BitTorrent accounted "from 20 to 35% of all traffic on the Internet". At that time the bandwidth cost was at least two orders of magnitude higher than today. The price of hard drive has since been divided by 40 [2] and the total Internet traffic has been multiplied by 40 [3].

[1]: http://history-computer.com/Internet/Conquering/BitTorrent.h...

[2]: https://www.computerworld.com/article/3182207/data-storage/c...

[3]: https://blogs.cisco.com/sp/the-history-and-future-of-interne...

[btym]

My argument was only that bringing the cost down would make it easier to build a more reliable P2P network. I doubt that reliability/cost are the main reasons P2P networks aren't more popular, rather that the average person doesn't really care or even know about their existence.