Some popular YouTubers are building their own video sites, like Floatplane and Nebula, to help other creators publish and monetize niche video content (David Molloy/BBC)

David Molloy / BBC:
Some popular YouTubers are building their own video sites, like Floatplane and Nebula, to help other creators publish and monetize niche video content  —  Whether he's showing off astronomically expensive computer gaming hardware or dumpster-diving for the cheapest PC builds possible …