I think it depends on what you want to accomplish with the whiteboard.
If you just want to capture a list of ideas, google docs will let people collaboratively edit a document or you could just have one person share their screen and capture verbal ideas.
If you want to diagram things, pen and paper + a camera can be just as effective if not more effective than a whiteboard. Often it's better to have the whole team do a sketching exercise and share their results which isn't really effective on a single whiteboard.
More importantly, whiteboards are never going to be effective for remote organizations for the same reason hallway conversations / voice chat aren't effective. It builds knowledge silos as only the people who were there understand the context of the whiteboard even if you photograph it.
If you just want to capture a list of ideas, google docs will let people collaboratively edit a document or you could just have one person share their screen and capture verbal ideas.
If you want to diagram things, pen and paper + a camera can be just as effective if not more effective than a whiteboard. Often it's better to have the whole team do a sketching exercise and share their results which isn't really effective on a single whiteboard.
More importantly, whiteboards are never going to be effective for remote organizations for the same reason hallway conversations / voice chat aren't effective. It builds knowledge silos as only the people who were there understand the context of the whiteboard even if you photograph it.