Dream sharing still hasn't been proven, and many people, even here, remain skeptical as to whether or not it actually exists, and under what circumstances. Assuming it is possible, you'd have the problem of validating the information given to you. People tend to think irrationally in dreams, to some extent even while lucid. So snooping around for the Coca Cola recipe, for example, wouldn't be likely to return valid results. Another factor is your own dodgy recall. I don't know about others, but for me, specific and exact dialogue is damn near impossible to recall. And, of course, there are the ethical issues of intruding one's mind and violating their privacy for the good of a company, which I am entirely against.

tl;dr: not gonna happen.