Soft drinks in the US are all kosher. It’s not because the US population keeps kosher but because the majority don’t have a strong preference and a minority are absolutely adherent. As a result, it’s easier for soft drink manufacturers to make everything kosher.
In this way, a small group can have a large impact on the behavior of a wider population. Are there more examples like this?
(I heard about this in an interview with Nassim Taleb.)