This is because in a Gesellschaft community is a modern community with an abundance of people and cultures. This is sometimes good but mostly destructive to the community. There are many disadvantages to this type of community. With many different cultures and many people, they only know people by one or two statuses. With no sense of community people use rational will which means that what is good for the individual trumps that of the community. This means that there has to be some sort of social control this is best shown in the movie when the park ranger has to check the perimeter to see if there are any people out there.
There is also one big disadvantage when it comes rise of modern society. The labor process is all wacky. This being that every job is essentially deskilled and the individual has no self worth when looking at the finished product. This alienates the individual and the individual starts to view every person as a transaction and how they can benefit from