So you meant to say:
I would go as far as to say that Bitwarden’s main competitive advantage and differentiation is that it’s source is available.
That is not true, there are a lot of other password management software out there where the client source code is either open source or source available. For instance keyguard: https://github.com/AChep/keyguard-app?tab=License-1-ov-file#readme which is an alternative proprietary bitwarden client, where the source is also available. Also the Proton Pass client is under GPLv3.
I would argue that the main advantage of bitwarden compared to others is that it is open source and has an open source server for self-hosting (vaultwarden). Which of course makes it difficult in terms of business strategy with their VC funding. But maybe becoming a non-profit org and getting money from donors, the strategic funds of EU and other governments, etc. might be an alternative way.
Sure. To me “source available” is still closed-source, since looking into it might give companies an attack surface for you to have violated their copyright in the future. Happened with IBM in the past: https://books.google.de/books?id=gy4EAAAAMBAJ&lpg=PA15&pg=PA15&redir_esc=y#v=onepage&q&f=false
Sure. Bitwarden doesn’t owe us anything, but it is still sad to see this decision and better clarification and explanation could have alleviated the breaking of the trust here.