We just talked about An-Cap lol
But let's talk about the Republic form of government. Sure, it is supposed to be representative of the "people" in generic terms. The problem, as all republics over history have shown,
is that eventually the government takes too much power for themselves. And either the people decide enough is enough and revolt or are eventually subjugated by said government and revolt anyway down the road. But in principle, the people should have (and do have) the power to put a stop to said governmental overreaches by charging their representatives to change the laws or not passing them in the first place. The problem with our current republic is the fact two political parties currently control the electoral process. It's easy shoehorning everyone into one or two parties and ignoring the character of the person. It certainly shouldn't be that way, but it's what we do.
But nice An-Cap answer, though never specifically mentioned.