It's hard for me to answer that kind of hypothetical question.
When the Lobbying Act was first enacted back in the 1990s, there was consideration of the possibility of having a voluntary registry of lobbyists. Parliament considered that and committee hearings were held and many people made representations. In the end, Parliament decided that we couldn't have a voluntary registry of lobbyists because then some people would do it and others wouldn't and there wouldn't be any way to get them to do it.