Monopolies tend to become insensitive bureaucracies, and governments tend to be some of the most monopolistic entities around. (If you think of monopolies as bad only because they get monopoly profits, or think other kinds of harm are avoidable given monopoly power, I recommend reading Lessig’s book The Future of Ideas : The Fate of the Commons in a Connected World). Democracy has sometimes been effective at reducing the extent to which governments have acted as monopolies, by creating competition between factions. In recent years, gerrymandering has virtually eliminated that competition for many legislative bodies.
California Proposition 77 would eliminate the conflicts of interest that make current gerrymandering a major threat to democracy, and would give us instead something that works more like our judicial system. Our judicial system isn’t ideal, but it’s better than what a legislature does when the voters are unable to influence the legislature.
Critics have complained that Prop 77 is imperfect, but haven’t provided a clear explanation of why the alleged imperfections could be considered large in comparison to the difference between the current gerrymandering and a competitive democracy, or why it would be harder to adopt improvements to Prop 77 later than it is to adopt it now.