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Re:Calla – spatial video conferencing software based on Jits... by sathorn on Wednesday October 07, 2020 @06:19PM (#24713468)
True, video chat is very expensive especially with the extreme bandwidth costs of the big cloud providers.

I built something similar as OP and chose a mesh solution for this reason even though it's inferior.

It appears that only big video chat companies like Zoom or Skype can afford to have a generous free tier, subsidized by their business offerings.

Re:Calla – spatial video conferencing software based on Jits... by dannyw on Thursday October 08, 2020 @03:09AM (#24716660)
They build their own DCs, and use cloud as a peak-smoother.

No one doing serious amounts of bandwidth pay outrageous big cloud prices. See: netflix.