To do industry level research you need to identify the common industry name and a system that you will see in many reports and databases is called the North American Industrial Classification System (NAICS).
In this system, establishments are grouped together if they do similar things in similar ways, and analysts in think tanks, information or data vendors and governments perform analysis and produce research based on those groupings.
When you are in the early stages of your research, the insights and trends in these reports can help you learn more about industry operations, what the outlook is, and what recent changes have taken place.
Trade associations, government agencies, and the private sector sometimes provide parts of their research to the public for free.
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Note: these are not limited to North America. Databases contain reports on industries and companies around the world.