First of all, you are trying to discredit me: I never said vaccines are bad, I never said it is a cure-all for all cancers.
To answer your other more sane questions:
Are governments influenced by companies? Certainly, especially in US.
Is research influenced by companies? Most definitely, sometimes researchers are even bribed.
So you doubt those sorts of claims on Vitamin C? Look into the research that was actually done.
I love science, and probably so do you. But I've already seen too much "science", where results of research was twisted just to be able to publish in a journal.
Don't dismiss me for some alternative medicine dude, I'm not. But I'm also old enough not to believe every fairy-tale that is told claiming to be "science". Especially not in fields where a lot of money goes around.