You don't even need them to sell them to you. It is possible to get information that isn't even public just by interviewing at a company. I've done interviews

You don't even need them to sell them to you. It is possible to get information that isn't even public just by interviewing at a company. I've done interviews where companies have told me their revenue growth, their next year plan with very specific partnerships and the technical challenges around achieving it, and I've had employees during the interview straight up explain how the company optimized their R&D to maximize their tax avoidance.