Fair point, but the instance I use doesn’t allow image uploads because of the disk space issue. Videos take way more space than that. And, of course, you can’t just slap in a single drive, you need RAID or something so when a drive fails, you don’t lose stuff.
Add in bandwidth concerns, and it’s a legitimate question. Hosting a general video site can’t be cheap, and people generally won’t pay for it.
If we did want a community run video hosting site ala Lemmy, how would that work? What would it cost the hosters?