I guess you're going for the big corporation market with the pricing, although the manifesto says small biz / bootstrap operations to me. Seems like a mismatch in messaging.

I've been using https://www.mmhmm.app for this sort of video streaming embellishment. It's pretty good though somewhat confusing, especially as they now have two products that are very similar but not identical. I believe one is replacing the other one but it's not clear. Mmhmm is simpler to use than OBS, so of course not as feature-rich. OBS allows doing things with audio and you can also run different audio to mmhmm (such as from virtual channel — I do some audio cleanup to remove fan and traffic noise) and then output a mmhmm-specic audio device so that your audio and video are synced in Zoom/Meet/whatever.