You can’t ban lobbying. But you can bring it into the light.
Lobbyists know that they are most effective, when no one is watching. At the moment, deals can be done with politicians without any public scrutiny.
All that we are asking here is that the blinds be opened, so that we can see who is in the room, what they are talking about and with whom.
The simplest way of achieving this transparency is with a register of lobbyists.