The people commissioning these studies need to somehow be liable for the accuracy of the results. If you were doing a private study where the results would onl

The people commissioning these studies need to somehow be liable for the accuracy of the results. If you were doing a private study where the results would only be for your own private usage, you would go the extra mile and pay the extra money for good, accurate science. But the financiers here don't really care about whether the result is accurate. They usually are optimizing something else entirely and accuracy is just some minimum threshold to avoid being accused of fraud.