I'm actually going to rewrite: Here's my version
An economics professor at Berkely said he had rarely failed a single student, but had once had a class in which some students passed, though very few actually learned anything.
One semester, his students insisted that capitalism worked. Since everyone would be incentivized to work hard and obtain wealth, everyone would benefit from the increase in production. So the professor said, "Let us conduct an experiment, then, with this class as our laboratory."
"There will be a limited amount of grades to hand out - these grades must be competed for. Grades for any essay or assignment are transferable. I do not care how you accomplish your essays and assignments - all that matters are results. To incentivize regular good grades, every consecutive A will give you free points on all future tests. If you get a single failing grade, you will fail this class. One thing I don't support is plagiarism - a plagiarized essay is one that is identical to another essay I have received."
After the first essays were graded the marks were awarded and were distributed across the class. The material was new and difficult. Some students who had studied hard were upset that they received poor grades, having been beaten out by those students with wealth or social connections had managed to convince relatives to pull some strings and write the essay for them, or had purchased their essays outright. Since the essays were still unique, this was allowed. Some students failed, and dropped out of the class, while others accepted "loans" from the successful students to pull them just above the passing line. Since there were only a small number of passing grades available to the class, even some of the hardest workers had to accept the offer of loaned grades in order to pass.
As the second essay rolled around, most of the students who had previously studied hard stopped completely - instead, they picked up part time jobs, and used the income to purchase essays of their own that could compete. Some of the very brightest studied even harder to try and beat the quality of the purchased essays, especially knowing they would owe a few of their grade points on each essay to those students who loaned them points the first time around. The wealthy students repeated their previous success. Three students who did study hard dropped out of the class altogether in order to write essays on commission for the wealthy students. By working together, they could churn out very high quality essays in record time, at the cost of failing the class.
By the time the marks were in for the third essay, a pattern had become quite clear - the hardworking students needed to work ever harder just to get close to passing, since they owed a portion of each grade to the wealthy students. The wealthy students scores soared, since not only were they were still getting the bulk of the As, but thanks to the free points they were managing perfect As even after loaning out enough points for a few hardworkers to pass.
Finally, there was the final exam - The hardworkers did well, and the wealthy students did poorly. But the hardworkers owed so many points to the wealthy students that the wealthy student's poor grades weren't enough for them to fail the class, and many of the hardworkers still failed despite scoring highly on the test.
Ultimately, the hardworking students scraped by, failed early on by refusing to accept grade loans, failed due to burning out trying to pay back their grade loans, or failed on the final exam after paying back owed points. The wealthy students learned nothing, but did fairly well despite that by working off the points owed to them by the hard workers. Those willing to work outside the system turned a profit collaborating on essays to sell to the wealthy, but obviously had to drop the class to do so. And the large swathe of students who struggled to understand the material failed early on, and don't really need to be considered.
The lesson here is that capitalism will ultimately fail, because it cements the advantages of those willing to abuse the system, while holding back those who work hard. Working outside the system or simply dropping out becomes an appealing alternative, and those who are both honest and hardworking are the ones who ultimately lose out.