On a different note, you made a comment about the return to work after politics.
I don't quite understand something. Regardless of whether an MP is a public office-holder, they will have formed ties and acquired knowledge and experience after one, two, or three terms in Parliament. When they leave political life and go back to work, they don't undergo a lobotomy to forget that knowledge so that it can't be used for personal gain. In the professional world, employers actually seek out people with experience. It's called hiring experienced people.
How do you draw the line between professional experience and personal gain?