This is also true, you are correct. But when you see news stories about something, say, 'Turns out corn syrup is good for you!' showing up on the evening news, and on Access Hollywood, and on the Yahoo! front page, and on ESPN, and on Jeopardy! questions all on the same day, there's something up.
I mean, this isn't some revelation I'm offering, it's just interesting as to why ESPN and Access Hollywood, who cover completely different genres, would both suddenly have a corn syrup story on their radar.
As for Big Pharma, I did used to wonder why prescription drugs were advertised on television...I mean, patients don't pick and choose their brands, their doctors do, right?
Until it hit me that often pharmaceutical companies find/discover drugs that don't automatically have a market. But if they advertise that new 'sleep disorder/re-order' drug, then people will think, 'Hey, maybe I need that' and start asking their doctor.
My doctor told me that people walk in all the time and ask if they should be taking some new drug they just heard of, and his reaction is 'why? you never had a problem with what this drug is describing before.' There are legitimate cases, but tv ads driving people to buy meds they might not even need is a real thing.