Well, in theory (as in could but usually dosn't happen) the people could remove the powers that are (through something called elections) - when they don't they must be the ones responsible for the outcome...
But I'm with you that leaders should be selected differently compared to what we so far tried (I'm quite sure that pulling these from inbreeding families by default - monarchy - isn't the best plan). A way to select someone both qualified and not overly keen on the job would be needed, possibly we should just do a raffle over the whole population as the result can't be that worse than what we get with the currently employed selection process (which seems to be perfect to filter in sociopaths).