Would I argue that the societal value of Amazon is actually huge (AUC-wise). Amazon positively impacts all of it's employees, consumers as well as other companies (my company wouldn't exists if AWS hadn't paved the wave for cheap cloud computing).

Anyway, it is certainly a mistake to equate generating socieltal value with financial gains. In many settings there is a strong positive correlation (Amazon IMO), others where it's weak (research) and yet others where it's negative (drug dealing).