[roenxi]

One person one vote doesn't mean equal power, it means the power distribution isn't nailed down by law.

It is rather apparent that some people - and certainly some groups - have a lot more power than others in any country. Voting just means the power is a little more mobile, and can shift over time.

1 randomly selected citizen has, practically speaking, no ownership or control of the welfare system.

[AnthonyMouse]

"One person, one vote" also has the obvious problem if similarly situated people constitute 5% of the population and it takes 51% to effect a change in policy.

This also provides a reasonable explanation for why existing policies are so ineffective -- politicians still want your vote (5% is 5%), but they also don't want to lose the votes of the other 95%, so if they can convince the 5% that they're getting something when they're really getting nothing (or worse than nothing), they get elected again.