You might have come across the ‘boiling frog’ model of how people cope with change.
The idea is that if you put a frog in a deep pan of water, it sits around doing happy frog stuff and saying ‘it’s not so bad once you’re in’. Then the pan is put on to heat. The frog adjusts to the gradual rise in temperature – sending out for the odd Ben and Jerry’s perhaps, but basically staying put. It adjusts and adjusts. Then it can adjust no more but, by then, it is no longer physically able to jump out of the pan. And so it goes to the great lily pad in the sky.
No frogs were actually harmed in the making of this metaphor. Hold that thought.