Confirmation bias is quite a popular term these days, indicating behaviors which focus on seeking and accepting only that information (or opinion) which supports your own. It is the refusal to take seriously any facts which might threaten your own beliefs.
In the 1990s I pioneered value based fees for consultants. The empirical evidence has been clear since that most people in consulting (and much of professional services) have moved in that direction, since it’s both more ethical and more lucrative than hourly billing. About 90% of the people who have heard me speak or who have read my books on the topic have concurred.
However, ten percent have not, and those are the people who are afraid to admit that they’ve been doing it wrong all those years, have left all that money on the table, and so simply reject any advice and evidence to the contrary.
The blind pursuit and acceptance only of confirmation of your position is based on fear and low esteem. Bold, confident people change their minds and their positions when the are faced with logical and empirical evidence.