If I had to guess legal due diligence (acquisition, filings, processing-filings), competitive intelligence, large corporations with established R&D or IP effort

If I had to guess legal due diligence (acquisition, filings, processing-filings), competitive intelligence, large corporations with established R&D or IP efforts, financial intelligence, etc — would all be markets worth looking into. Creators & inventors tend to want a lot of freebies in my experience.