Everything you stated still doesn't mean there isn't a correlation between increased KI attendance and profits @Honorarius . Yes they would like to squeeze every penny out of you, but there is only so much they can do in certain markets. Example I'd say Cedar Point makes more on average per guest than Kings Island does.
A giga would make me visit much more frequently from my wagon wheel residence. On the flipside, I am not a fan of season long dining. IMO it leads to lower quality food service while also putting extra non-spending bodies in the park on weekdays.
@chugh43 I wouldn't take what I hear from "some people" as true across the board. Sure some people will buy their pass and not have much else to spend in the park that day. But logic would say that since they bought a season pass, they will be back for more visits..and who knows, maybe they will bring some money with them when they do. (People usually get paid every week or every other week.)