That seems naive to assume. We already live in a world where there are multiple rankings, and many of them (even some of the most important ones, like QS or Sha

That seems naive to assume. We already live in a world where there are multiple rankings, and many of them (even some of the most important ones, like QS or Shanghai) rely only on independently collected or public data. We already have what you suggested as a solution, and look at where we are. The problem is more fundamental.