The example of certification-based credentials mentioned in the article, the CPA exam, is a bad one since you have to have a bachelor's degree in order to take

The example of certification-based credentials mentioned in the article, the CPA exam, is a bad one since you have to have a bachelor's degree in order to take the exam. It doesn't matter if you could ace it on your first try, most state accountancy boards require 150 hours of college credit before you can take the CPA. This restricts the supply of accountants and keeps accountant salary high. There was a movement a few years back to increase the requirement to a full Master's degree. It's totally unnecessary to be a good accountant.