Because in your world, California and New York should run Nebraska and Iowa?
Senators shouldn't even be directly elected. It was an add-on to this Republic in an effort to further entrench and enrich political interests.
Its hilarious, we have these advocates for "direct democracy" until "the voters" cut against what they believe.
You people can't have your cake and eat it too. You can't ask for the protection of minority interests while clamoring for a more direct democracy only when it whets your ideological palette.