I think Anbox is still under development, so if the stretch goal was reached I imagine that Purism would probably contribute to Anbox’s development to help get it to the point of practical usability. (Assuming there isn’t another similar project that Purism thinks is better.)
There would probably be a bit of work to make it integrate well with the rest of the phone’s user experience (e.g. integrate it with the UI, enable apps to have controlled access to contacts/photos etc).
Sorry @nenad, I don’t know the answer to your question.