In many cases someone else already knows the answer and your interruption of them is less time lost for the company than you looking up the answer.
For the company it would probably pay off better (over time) to let the people who regularly get stuck after trying nothing spend some energy figuring out than what they get in return for shipping them to conferences.
Additionally, when it’s not your domain knowledge, research is more difficult and time consuming. It can be difficult to even know where to begin. Someone new to media production, for instance, wouldn’t know the major forums to check off hand. Someone had to tell me about dvxuser, reduser, cinema5d, etc.
We learn through a combination of our own effort efforts and the help of others. Otherwise why would we even have school?