I think what you're driving at can be more generalized as users bringing solutions when it would be more productive for them to bring problems. This is something I focus on pretty seriously in IT. The tricky part is to get the message across without coming across as unhelpful, arrogant, or obstructive. It often helps to ask them to describe what they're trying to achieve, or what they need. But however you approach the discussion, it must come across as a sincere desire to help.