Correct. Social pressure is what pushes most people there.
As a result of this social pressure, people do tend to go off the rails when there (having fun) very few give a fck about studying - who cares, there's no reward for getting anything beyond 60-70%.
This is mythology. I went to a very high ranked uni and this is not what any of my classmates were interested in either - it was all about getting drunk and pulling all nighters a few weeks before exams.
Career networks? Hahaha. Very few benefitted from that.
Once again, I went to a top 3 ranked uni on many league tables worldwide.
As a result of this social pressure, people do tend to go off the rails when there (having fun) very few give a fck about studying - who cares, there's no reward for getting anything beyond 60-70%.