I think there are 2 battles that would have to be won:
1) The name. You say chili to someone outside the tri-state, and they think regular chili. Texas style. Comes in a cup or a bowl. Not over pasta. If we want pasta, then we will go get Italian or Chinese.
2) The region. I think it will have a better chance of succeeding (a) where there are tri-state transplants, and/or (b) where the weather is cold for a good bit of the year. In my part of the world, the growing season is long. We pick stuff out of gardens a lot longer than you do 400+ miles to the north. We can grill out pretty much all year round. We also have much better access to fresh seafood. Add in all of the barbecue (Western NC vs. Eastern NC vs. Texas vs. Memphis...) in this part of the world, and the reality is that we have a lot of other things that are going to sound better and taste better than Cincinnati chili.