That presumes candidates would campaign the same way and voters would vote the same way. Look at the way primaries are run. Candidates put extraordinary effor

That presumes candidates would campaign the same way and voters would vote the same way. Look at the way primaries are run. Candidates put extraordinary effort into small states because that's where the party has decided it wants to have its candidates slug it out. They could instead choose larger states but they don't. Or the candidates could campaign in larger states but it would sink their candidacy --they campaign in order to extract maximum value. It's similar with presidential campaigns.