Customer adoration is earned through consistency and branding. Not sure we're disagreeing. If Chick fil a suddenly started selling low grade meat they would surely lose their adoration but it's also true that there isn't a years long waiting list to open a Chick fil a franchise just because they're consistent.
I do agree with you, I just want to point out that it is a lot more ficle than tech. One bad service can ruin your reputation. No one forgets a bad meal, and a whole table with bad meals is a death knell