well, it rather depends on how you define 'survive'. Most chickens kept for egg production in large commercial concerns don't live much past two years. They get killed once their egg production drops off. Given many chickens can 'survive' to ten years old and beyond I wouldn't take your example as a testimony of chicken survival.My reasoning, most successful commercial egg and meat farmers use enclosed structures which allow maximum controls over their flock and production. Chickens are domesticated fowl bred to survive under these conditions.
There is plenty of evidence from people who have 'rescued' chickens from these egg factories that suggest such chickens live a far shorter life even once their conditions improve than their free range, or pasture kept counterparts.
I suppose a lot depends on how you view the chicken. If it's just a creature to be exploited for eggs and meat then two to three years of enforced confinement and an early death may be acceptable. It's certainly not how I view chickens and definitely not how I would keep them.