So now you've changed your position, what happens to your original claim "If every car in your neighborhood that gets broken into is manufactured by a single manufacturer, it is in your interest in asking why that is, and perhaps considering that fact when shopping for a new car."

Why would that need to be said at all, if businesses are using security as A [prominent] deciding factor already?

My reply "businesses are visibly not using it as a deciding factor" still seems correct.