The huge amounts spent on campaigns are merely the result of the ruling class having optimized the equation of how to get your guys in office. If you somehow totally eliminated the role of money in campaigns, the next most efficient solution would be found - be it control of the media, procedural changes, slash and burn smear campaigns, whatever.
Voting via net worth is just the easy equilibrium we found.
Voting via net worth is just the easy equilibrium we found.