That's what they try to achieve, but they fail to do so, because the labour relationships are still fundamentally transactional.
Workers aren't working for the common goals of the company, they're working for their salary. And since the primary goal of the company is profit, they are fundamentally in conflict with the goals of the company.
The goal of the employee is thus to seem valuable, and get promotions. Sometimes that means working harder, but often it means making sub-optimal decisions for their own benefit. This isn't always conscious or intentional, but nonetheless, it's what people end up doing, and it leads to a lot of inefficiency: Workers not mentioning difficulties for fear of looking incompetent. Managers insisting on impossible deadlines and so on.
Competition pushes systems to be more efficient, but the problem is it never stops pushing.