I agree with you that they conform the taste to the market they are serving and sometimes the staff is not from the origin of that cuisine, the Majority of Indian Restaurant owners in NYC are from Bangladesh, so they are cooking Indian dishes from a Bangladeshi lense for an American audience. The end product's flavor profile becomes its own unique creation far away from it says on the outside window.
Having said that, what's coming down the pipeline, my crystal ball says in fast food, we have had burgers, doners and shawermas go global, the Paratha Roll has a chance to do the same, let's see ππ