Pretty sure the politicians don't want it fair. Politicians don't do fair. It's the worst of humans that are attracted to politics and surviving politics, after all.
If you want it to be otherwise, you have to believe that it can be. You have to believe that we can have political systems where people who actually care about issues, about people, about the welfare of other people, about justice, abdout the future can play a role.
If you really don't believe that's possible ... I don't want to be you.
Even the appearance of a conflict of interest should be treated as a conflict of interest. No burden of proof required.