The main thing holding the family back from a change in living quarters was far more their complete hopelessness and the idea that they had been struck by a misfortune like no one else in their entire circle of relatives and acquaintances.
The family in Kafka's "The Metamorphosis" finds themselves trapped in a cycle of despair that prevents them from seeking a change in their living situation. Their overwhelming sense of hopelessness leads them to believe that they are uniquely unfortunate, suffering in a way that sets them apart from their relatives and friends. This isolation deepens their feelings of helplessness and stagnation.
Their perception of misfortune acts as a barrier, locking them into their current circumstances. Instead of taking action to improve their lives, they succumb to the belief that their plight is singular and insurmountable. This mindset ultimately reinforces their helplessness, stifling any potential for change or growth within the family.