> If your video goes viral

That's what PeerTube is supposed to be for. You can set up a PeerTube host yourself. Or there are some public PeerTube hosts that accept uploads. When people are watching your videos, the ones with good bandwidth are also hosting them for other users. The hosting site is just handling the original copy and coordinating the peers. (This isn't like Bittorrent; hosting is centralized but playout is distributed. When no one is watching, the only copy is on the original server.)

PeerTube really should be popular like WordPress, for self-hosted content. But it's not. Neither Google nor Bing indexes PeerTube sites, so there's no discovery. Few PeerTube videos have more than a handful of viewers. I use PeerTube for technical videos, to keep them ad-free, and it works fine for that low-volume application.

Here's the Blender 4.2 showcase reel on PeerTube.[1] It's a good demo. Will it overload if watched by many HN users? Please try.

[1] https://share.tube/w/uYK7X52m2Y7RyahL4wjKaM