There are different representative forms of government, and their priorities are correspondingly different. What you describe is more or less the basis on which US was organized back in the day. However, by the time the West Coast states were being settled and granted statehood, there was a pushback against elitism in government, and more interest in direct democracy. Which is why those states ended up with extensive provisions for referendums written into their constitutions. If the citizens of California decide that it's not in their interest to govern themselves directly, they can always amend the constitution to remove those provisions.
