Don't be so sure. The baseball stadium in my city started selling roasted crickets for like $9 per tiny cup, and people have been buying shitloads of them.
Tasty and novelty can sell real well to rich folk.
I am guessing you have a lot of Oaxacan Mexicans around your stadium. Fried crickets are big in Oaxaca. When I lived in L.A., you could buy Tacos de Chapulines from street vendors in some places.
I've eaten insects. They taste fine. They're high in protein. They're probably the greenest possible livestock.
A huge percentage of the world eats insects as part of their diet. It's only in the west that we have this crazy needless taboo. People are even disgusted by cricket flour. You can't see crickets in cricket flour. Things baked with cricket flour taste fine. And are higher in protein.
No way in hell I would pay that much for what is essentially fry batter with a bit of protein added in. Sure, fry batter is delicious but you can get it much cheaper pretty much anywhere.
If they're talking about Dodger Stadium, you can get a cricket taco (tacos de chapulines) for a few bucks from a street vendor before you even get to the stadium.