One could think of their predicament like middle management, the big companies had some skill at delivering content which is how they got so big. So society also promoted them into the job of moderating content, a job which they were unskilled at doing. Maybe this is a case of companies, like people, rising to the level of their incompetence and staying there because of lack of ability(the appropriate tech) or will(customer/employees revolting against a policy) to move upwards.