for 3d printed gun people (not personally one of them, just browsed their subreddit once), they use some vaguely blockchain crypto related p2p video host called LBRY, not sure if that model is scalable though, as it seems to be based around free p2p hosting like torrents, although there was some mention of hosting fees, presumably in crypto? not sure
voting third party will just split the vote for the side you want though (and thats a big problem when the opponent is literal evil or whatever, and the margins are so tight), we need to switch to a better voting system like ranked choice voting to allow more than 2 options.