I was under the impression that CF did not play Robin Hood Reverse like Six Flags, and what the park makes, they can spend as long as they don't end up in the red.
With that said, if Valley Fair! is making enough money to get the rumored B&M inverted, why would it not be possible for VF! and WoF to get one? Is there a rule that says only one CF park can get one B&M inverted a year? As far as I know, there isn't, so why would VF! and WoF fight over a rumored coaster?
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Do your own homework!