the spotless catering contract is basically Locked in for eternity for the stadium. Not much that can be done about it.
I think they've come up with quite clever ways to come up with work around alternatives to the expensive chip and hotdog options that spotless offer. As bwtcf mentions above, those options are a reasonable price and good quality. They've also done well at working around beer sponsorship in pushing for craft beer.
Yep, and honestly, if, with those options available, you still go like a lemming to the spotless outlets and then complain about the price, well I don't have any sympathy for you.