From past experience conducting data analysis on customer survey responses, I can say that you typically get a "barbell distribution" - most responses are eithe

From past experience conducting data analysis on customer survey responses, I can say that you typically get a "barbell distribution" - most responses are either very negative or very positive, with relatively little in the middle. If people were very disappointed or had their expectations exceeded, they tend to actually respond, if the experience is "meh", not so much.