I agreed with your post up until you slammed Red Sox fans in your argument. The Red Sox have done very well attendance-wise since 1967 even during the years they did not make the playoffs.
(Personally, if someone sticks with a team when they haven't won a championship in 80 plus years, I wouldn't call them spoiled.)
They don't HAVE to make the playoffs every year to ensure high attendance. The attraction is Fenway Park, and they get busloads of tourists from all over New England for every game. If you live in New Hampshire, you should have known that already.
But you were correct to when you said it's not accurate to compare Bob Kraft's situation to Ralph Wilson's.