Exactly!
We're so afraid a child might not eat that we give them a dozen choices...... Instead of saying lunch is XY & Z. Even at home, I've seen mothers get up to fix Jr. a PB&B because he's upset with meatloaf.
In controlled settings where all kids are served the same meals with the understanding there are no subsitutions outside of allergies etc, you'd be surprised how quickly they start eating their veges etc.
Heck, I've seen them take a liking to collard greens and cornbread after a bit. And that ain't expensive food.
My parents never had any trouble getting me to try new foods.