But then the disappointing part is that the system in place is designed to exploit newcomers and place them in an abuse relationship where they are forced to go through the ringer as indentured servants hoping that their ultimate goal is just around the corner.
You may quote simplistic cliches regarding economy and career choices, but the truth of the matter is that the grad school system is designed to be a monopoly where grad students have absolutely no power or influence over their career other than quitting, which ultimately results in total and definite exclusion from the industry, and thus are forced to endure years of indentured servitude. As a grad student you don't have the freedom to switch schools, negotiate your salary, or even be recognized as an employee.
This example demonstrates the absolute lack of power or influence that grad students have: if you disagree with your supervisor then say goodbye to your whole career.