Most people who go for more degrees believe they can get better job at the end of the day. People that only go for more degrees in a stare with high unemployment rate are they doing right thing by putting all their focus on academic because this is the only thing they can do best.
In this case, it is true that you will not be able to achieve a decent or high income just by having a diploma and degree. However, in terms of relationships in the academic field, it can always produce networks or acquaintances which can later be used as capital to enter various sectors. It's not just the diploma or title that is promising, but the social access.
Apart from that, experience in the academic field can train your mentality, communication techniques and approach, which is the main capital in finding a job that might later produce a decent salary. because it is not just a title or diploma, but skills that are possessed or honed while carrying out that education. It is not impossible that high school graduates can get maximum wages provided that the skills they have are commensurate with the work they do.
From all that, there is something promised by the campus, namely the formation of a mindset that results in the development of skills that can be used as capital.