What is the point of think tanks then? Just get paid by companies and do their propaganda but expect people to believe your thoughts are free because it's a "non-profit"?
Well, that's a good question for the think tanks. I imagine they always want more funding, so they reach out to corporations, and ultimately find themselves in conflict. I'm sure they'd argue that, without the corporate money, they wouldn't exist in the first place. Catch 22.