I think food in general has been doing this for a long time. Over time companies are switching out more expensive ingredients for cheaper ones that are close enough and as a result over time, food tastes different. It is part of the reason why many people try and avoid High Fructose Corn Syrup. It is much cheaper than sugar, and certainly changes the flavor of the things it is in compared to regular sugar.
I think food in general has been doing this for a long time. Over time companies are switching out more expensive ingredients for cheaper ones that are close enough and as a result over time, food tastes different. It is part of the reason why many people try and avoid High Fructose Corn Syrup. It is much cheaper than sugar, and certainly changes the flavor of the things it is in compared to regular sugar.