In searching for solutions to your marketing issues, it is often useful to make sure you aren’t making assumptions that are irrelevant.
Going back to politics, if you look at the 2014 campaign cycle here in the US…you actually don’t see demographics, maps, or other stuff being as big of a factor as the Democrats making assumptions about their target voters that just wasn’t true.
Or, if you want to go even further back…remember New Coke?
The point is that if you are operating under a set of beliefs, it may be worth the effort to make sure you are not operating under false beliefs.