Information unfriendly commercial companies

I get it, that secret ingredients are what makes commercial companies thrive.
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Unfortunately, kits with minimal information is not helping students understand the concept behind workability of the kit (or approach). It is a disservice to Science and knowledge.
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I never liked companies that provided less-to-no information about their products. I shun away from these companies to save myself from being made into a technical person who follow instructions.
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Some companies are friendlier while others are protective of self-interest.
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For those who want to learn more about kits, the ideal place to look would be via patent files. Google is one place to start.
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Just to share.