I know it sounds Utopian, Crazy, it could never happen

Have we paused to consider how much money is spent in America today for campaign financing ? We are talking billions a lot of them. Think of the hungry that could be fed, or the dent it would make in the deficit.
The late Sen. Bill Proxmire served in the Senate for a long spell and then retired. He did no fund raising for his campaigns.
Yes the thought comes to mind that this opens the door for only the very wealthy to run.And it's likely that some powerful lobby groups would still kick in money for a particular candidate. True but if we required complete transparency the voter would at least know where the money is coming from.
This sort of change is not gong to occur overnight, but it would be a change for the better. Let's face it, the course we are on now can prove fatal to our nation.
Would appreciate your thoughts on the question.